Best Small Group Stonehenge Tours for Couples (2026 Guide)
20th August 2026
💑 Best Small Group Stonehenge Tours for Couples (2026 Guide)

Small-group Stonehenge tours can give couples a strong balance of atmosphere, guide interaction and value. The best choice depends on the experience both travellers want to share
💑 What Makes a Small Group Stonehenge Tour Good for Couples?
Stonehenge can be a memorable experience for two people travelling together, but the best tour is not automatically the smallest, most expensive or most romantic-sounding option.
Small-group tours can work particularly well for couples because they often sit between two very different styles of travel. They usually feel less anonymous than a large coach tour while remaining considerably more affordable than booking a completely private experience. Easier guide interaction, smoother group movement and a more cohesive atmosphere can all make the wider day feel more personal.
That does not mean a shared tour suddenly becomes private. You will still be travelling with other visitors, following an organised itinerary and working within scheduled timings.
The real advantage is balance.
For many couples, a well-designed small-group tour provides enough interaction and atmosphere to make the day feel distinctive without requiring the cost or flexibility of private touring.
The best small-group Stonehenge tour for a couple is the one that protects the quality of the shared day—not simply the one with the fewest passengers or the most premium-sounding label.
🧭 What Should Couples Prioritise Before Choosing a Tour?
Before comparing individual Stonehenge tours, decide what the two of you actually want from the day.
Start by choosing your two or three strongest priorities. These might be atmosphere, photography, time at Stonehenge, guide interaction, privacy, value, additional destinations, flexibility, departure timing or the significance of a special occasion.
This matters because couples do not always begin with identical expectations.
One person may have dreamed about Stonehenge for years and want it to dominate the day. The other may be equally excited about visiting Bath, Windsor or another major destination. One may happily leave London before dawn for an atmospheric experience while the other would enjoy the same journey far more after a sensible night’s sleep.
Neither preference is wrong.
A successful couples’ itinerary usually comes from agreeing what is essential, what would be nice to have, and what neither of you minds sacrificing.
A useful pre-booking conversation is:
- Is Stonehenge the main reason for the day?
- Does atmosphere matter more than convenience?
- Do we want several destinations or more depth at one?
- Is photography important?
- How much interaction do we want with the guide?
- Would we genuinely use private-tour flexibility?
- How much extra are we comfortable paying for a more personal format?
A strong couples’ itinerary is built around shared priorities, not two individual wish lists squeezed into the same day.
That agreement also makes the commercial comparison much easier. Once you know which elements matter to both of you, you can compare Stonehenge tour formats according to the experience they actually provide rather than being distracted by the longest itinerary or most premium-sounding option.
📊 Best Small-Group Stonehenge Tour Types for Couples
Different tour styles suit very different couples. The most useful comparison is not simply how many people travel, but what each format gives you—and what you sacrifice in return.
| Tour Style | Best For | Couple Advantage | Main Trade-Off |
|---|---|---|---|
| Standard Small Group | First-time couples, value | More personal than a large coach | Still a shared tour |
| Sunrise Small Group | Atmosphere, photography | Strong sense of occasion | Very early start |
| Evening Small Group | Relaxed timing, atmosphere | Memorable end to the day | Late return |
| Inner Circle Small Group | Bucket-list trips, special occasions | Greater sense of occasion | Limited availability |
| Combination Small Group | Couples with limited UK time | Broader sightseeing day | Less depth at Stonehenge |
| Stonehenge-Focused Small Group | Monument-first couples | More attention on Stonehenge | Fewer destinations |
| Private Tour | Anniversaries, proposals, flexibility | Maximum personalisation | Higher cost |
These categories can overlap. A tour might be small-group, evening-based and include Inner Circle access, for example.
A sunrise experience may produce a stronger sense of occasion but make the beginning of the day demanding. A combination itinerary can let you share several memorable places but inevitably divides your time. A private experience offers greater personalisation but is only better value when you will actually use that flexibility.
Choose according to the experience, not the label.
The next useful decision is timing. Once you have identified the tour style that broadly appeals to you, consider how its departure and return times will affect not only Stonehenge but the rest of your day together.
🌅 Sunrise or Evening: Which Feels Better for Couples?
Time of day can change both the atmosphere at Stonehenge and the shape of your entire day. For couples, the better choice is not necessarily the most dramatic-sounding one, but the timing that fits comfortably with the way you actually travel.
🌄 Sunrise Small-Group Tours
Sunrise can be especially appealing for couples who enjoy photography, atmospheric places and experiences that feel deliberately different from conventional sightseeing.
There is something memorable about making Stonehenge the first major experience of the day. For a milestone trip or a long-awaited visit, the early timing can add a genuine sense of occasion.
The trade-off is obvious: sunrise access can require a very early departure. That may affect the previous evening, your sleep and your energy for anything planned afterwards.
If you have just arrived in Britain, are already following a demanding itinerary or simply dislike early mornings, romantic expectations can disappear quickly when the alarm rings before dawn.
Choose sunrise because the timing itself excites both of you—not because sunrise automatically sounds more special.
🌇 Evening Small-Group Tours
Evening experiences can suit couples who prefer a slower start and like the idea of Stonehenge becoming the defining conclusion to their day.
Later light can create an atmospheric setting, while avoiding an extremely early departure may make the whole experience feel more relaxed. It can also fit more naturally into the rhythm of a holiday for couples who prefer leisurely mornings.
The compromise is a later finish. Dinner plans, hotel location, onward transport and the following morning all need consideration.
Neither sunrise nor evening guarantees dramatic skies, perfect light or quiet conditions. Weather, season and the circumstances on the day will always influence the experience.
The better timing is simply the one that complements the way the two of you actually travel.
If both timings appeal, compare them against the wider itinerary rather than treating Stonehenge as an isolated decision. The option that leaves you rested enough to enjoy the experiences before or after Stonehenge may ultimately create the stronger day.
🗿 Stonehenge-Focused or Combination Tour for Two?
One of the most important choices is whether Stonehenge should dominate the day or share it with other headline destinations.
🪨 Choose a Stonehenge-Focused Small Group If…
Choose a more focused itinerary when Stonehenge itself is the main reason for the journey.
This can be particularly rewarding when archaeology, photography or the emotional significance of finally seeing the monument matters strongly. Fewer destinations may also mean the day feels less like a sequence of arrivals, departures and deadlines.
For couples who prefer to experience places properly rather than accumulate them, depth can be more valuable than sightseeing quantity.
🏰 Choose a Combination Small Group If…
A combination tour can be excellent when both of you genuinely want to visit another major destination such as Bath, Windsor or Oxford.
For couples with limited time in Britain, it can also be an efficient way to turn one sightseeing day into a broader introduction to southern England.
The trade-off is time.
Every additional destination means more travel and less opportunity to linger elsewhere. A longer attraction list can therefore look better on paper while creating a day that feels less satisfying in practice.
Ask yourselves one useful question:
Would we choose to visit every destination on this itinerary even if it were not bundled with Stonehenge?
If the answer is yes, a combination tour may be ideal.
If not, the apparent extra value may simply create a busier day.
For couples, this is ultimately a choice between two perfectly valid styles of travel: more places experienced together, or more time together at the place that matters most.
When comparing combination options, consider where the day naturally leads next as well. Bath, Windsor, Oxford or another destination can strengthen a wider British itinerary when it is somewhere you genuinely wanted to experience anyway. The additional stop should contribute to your journey rather than simply increase the number of attractions included.

Couples should decide what they both value most before comparing Stonehenge tours, whether that is atmosphere, special access, additional destinations or the personal feel and value of small-group touring
👫 Why Small Group Can Work So Well for Couples
Small-group touring can offer a useful middle ground for two people who want the day to feel more personal without needing complete privacy.
With fewer travellers, asking questions can feel easier and interaction with the guide may develop more naturally. Boarding and regrouping can also be simpler, helping the day flow with less of the formality that can accompany much larger groups.
The social atmosphere may be more cohesive too. Travelling with other people does not necessarily detract from the shared experience; some couples enjoy meeting fellow visitors while still having plenty of time to experience Stonehenge together.
There is an important distinction:
A couple does not need a private tour to have a personal experience.
A well-designed small-group tour may provide exactly the right level of interaction and atmosphere for couples who are happy to share the day.
However, small group is still shared touring. Departure times, destination timings and the basic itinerary will not revolve entirely around the two of you. Group size can also vary between operators and individual tours, so “small group” should not be treated as a universal passenger-number guarantee without checking the specific experience.
If those limitations sound perfectly acceptable, the private-tour premium may provide little additional benefit.
The real question is whether you want a more personal shared experience or a genuinely personalised experience. For many couples, the first is enough—and that is precisely where small-group touring can make the most sense.
💍 Best Small-Group Options for Anniversaries, Honeymoons and Special Occasions
When Stonehenge forms part of an anniversary, honeymoon, birthday or another important journey, the definition of value can change.
Atmosphere and pacing may matter more than the number of attractions included. Sunrise or evening timing can create a stronger sense of occasion, while Inner Circle access may appeal to couples for whom Stonehenge is a genuine bucket-list experience.
But a meaningful day does not automatically require the most expensive option.
A standard small-group tour may be perfect if what matters most is simply experiencing Stonehenge together. Another couple may genuinely value the additional control of private touring because they want the wider day to feel individually designed.
Before upgrading, ask:
What would actually make this day feel significant to us?
The answer may be special access. It may be a particular time of day. It may be combining Stonehenge with somewhere that has personal meaning, or deliberately choosing fewer destinations so you can experience each one without watching the clock.
For some couples, privacy itself will be important. For others, sharing the experience with a small number of fellow travellers will make no difference to its significance.
The occasion should therefore influence the decision without dictating it.
Do not pay for features simply because anniversary or honeymoon travel makes an upgrade feel expected. Spend more where the additional access, flexibility, atmosphere or personalisation genuinely improves the experience you want to share.
If the occasion forms part of a wider journey through Britain, consider where the additional budget will create the strongest memory across the whole trip. A premium Stonehenge experience can be worthwhile when Stonehenge is genuinely central to the celebration; when it is not, preserving time or budget for another meaningful destination may create a better overall journey.
Significance comes from fit, not price.
📸 Best Small-Group Tour for Couples Who Love Photography
Couples interested in photography should prioritise usable time at Stonehenge rather than group size alone.
A smaller group may make movement and communication easier, but it cannot compensate for an itinerary that gives the monument insufficient attention. If photography is one of the main reasons for your visit, check how the whole day is structured rather than assuming that “small group” automatically means more photographic freedom.
Time of day matters too. Sunrise or evening conditions can create interesting possibilities, particularly when changing light adds depth to the stones and surrounding landscape. British weather, however, means dramatic skies and perfect light can never be guaranteed.
Consider what you actually want to photograph as well.
Some couples primarily want images of Stonehenge itself. Others want photographs of themselves together with the monument and landscape as part of the memory of the trip. That can make having enough unhurried time more valuable than squeezing another attraction into the itinerary.
An overloaded combination tour may therefore become frustrating if photography is one of your strongest priorities. Conversely, if photographs are secondary to experiencing several destinations together, a broader itinerary may still be the better choice.
For photography-minded couples, the amount of useful Stonehenge time usually matters more than passenger count alone.
A simpler itinerary with breathing room can ultimately produce better photographs—and a more enjoyable shared experience—than a longer list of places visited against the clock.
When comparing potential tours, look beyond phrases such as “sunrise”, “evening” or “small group” and consider what those features mean in practice. The strongest photography choice is the one that gives you suitable timing and enough space within the overall itinerary to enjoy the conditions you actually encounter.
💷 Is a Small-Group Tour Worth Paying More for as a Couple?
For many couples, the appeal of small-group touring lies in the balance between a more personal experience and shared-tour economics.
Compared with a large coach, you may be paying more for fewer travellers, easier interaction with the guide, smoother group logistics and a less anonymous atmosphere. Those differences can influence how the whole day feels, particularly when Stonehenge is an important part of your trip rather than simply another attraction on the itinerary.
Those benefits can be worthwhile—but only if you care about them.
A small-group premium makes more sense when you value:
- easier interaction with the guide;
- a more cohesive group atmosphere;
- potentially smoother boarding and regrouping;
- a less large-scale touring experience;
- a more personal shared day.
It may matter less when your main priorities are:
- the lowest available price;
- a particular itinerary;
- straightforward transport to Stonehenge;
- broad departure availability.
There is no virtue in paying more simply because the words “small group” sound premium. Check what the individual tour actually provides, including its stated group arrangements, itinerary, timings and inclusions, before deciding whether the difference matters to you.
Equally, choosing purely on the cheapest price may leave you wishing you had spent a little more if the group environment is important to both of you.
When comparing options, consider the total cost for two rather than looking only at the per-person difference. A modest individual premium becomes more significant across a couple, particularly when it competes with accommodation, another tour, attraction tickets or experiences elsewhere in your British itinerary.
The useful calculation is therefore not simply price per person. It is whether the additional cost changes the quality of the experience in ways you will genuinely notice.
Paying more is only worthwhile if you can identify what the extra cost improves for the two of you.
🚘 Small Group or Private Tour for Couples?
This is often the most important comparison for couples considering a more personal Stonehenge experience. The difference is not simply the number of people travelling with you; it is the amount of control and personalisation you actually want from the day.
🚐 Choose Small Group If…
Choose small-group touring when you want a more cohesive environment than a large coach but remain happy following a shared itinerary.
It can provide excellent value if you enjoy guide interaction, do not require complete privacy and are comfortable travelling with other visitors. You benefit from a more intimate group format while continuing to share the cost of the experience with fellow travellers.
For many couples, that balance is enough.
🚘 Choose Private If…
Private touring becomes more valuable when flexibility has a genuine purpose.
You may want tailored pacing, particular stops, specialist historical interests or greater control because Stonehenge forms part of an important celebration. Privacy itself can also be meaningful for an anniversary, honeymoon, proposal or simply for couples who strongly prefer travelling independently.
But ask whether you will actually use the flexibility you are paying for.
If you intend to follow essentially the same sightseeing route and are comfortable sharing the experience, a well-run small group may deliver nearly everything you want at a lower cost.
Private does not automatically mean more romantic, and small group does not automatically mean less meaningful.
The better choice depends on whether personalisation materially improves your day. If it does, private touring can justify its premium. If it does not, small-group touring may provide the stronger balance of atmosphere, interaction and value.
Before deciding, compare the actual difference between the two experiences rather than the labels alone. If private touring changes the pacing, route or experience in ways that matter to you, the additional cost has a clear purpose. If the underlying day remains substantially the same, the small-group option may leave more of your travel budget available for the rest of your journey.
🌍 Best Choice for First-Time and Overseas Couples
Overseas visitors can feel pressure to make every important UK experience the “ultimate” version because they may never return.
That can lead to unnecessarily complicated travel plans.
A sunrise departure may sound perfect until it follows a late international arrival. A packed combination tour may seem efficient until it becomes the third demanding sightseeing day in succession. A private upgrade may sound appropriate for a once-in-a-lifetime visit even when neither of you particularly needs the additional flexibility.
Consider Stonehenge within the whole trip, not in isolation.
Hotel location, jet lag, fixed travel dates, onward plans and the number of days you have in Britain may matter more than securing a theoretically ideal tour format. If Stonehenge falls near the beginning of your holiday, be especially realistic about how an early departure might feel after travelling internationally.
The same principle applies to combination tours. Visiting several major destinations in one day can make excellent use of limited time, but only when the pace suits both of you. Trying to maximise every sightseeing day can eventually reduce the enjoyment of the trip you worked so hard to plan.
A once-in-a-lifetime journey does not automatically require the most expensive Stonehenge experience.
Sometimes the better decision is a straightforward small-group tour that fits comfortably into your itinerary. For another couple, allocating more time or budget to Stonehenge will be entirely justified because the monument is one of the principal reasons they came to Britain.
If Stonehenge is one stage of a wider journey, also consider what follows it.
A combination day can provide a natural introduction to destinations such as Bath, Windsor or Oxford, while a Stonehenge-focused experience may make more sense when those places already have dedicated time elsewhere in your itinerary.
Judge the tour by how well it contributes to your whole UK journey, not simply by how impressive the experience sounds on its own.
📅 What About Stonehenge Inner Circle Access?
For some couples, Inner Circle access may be the experience that changes the decision entirely.
Getting closer to the stones can carry a strong sense of occasion, particularly for milestone trips, photography-focused visits or travellers for whom Stonehenge has long been a bucket-list destination. It can therefore be worth considering when special access itself would add something genuinely important to your shared experience.
That does not mean every couple needs Inner Circle access.
If a standard Stonehenge visit already delivers what you want, special access may add cost, restricted timing and planning complexity without improving the trip proportionately. Conversely, if getting closer to the monument is one of the experiences you would most regret missing, it deserves greater priority when choosing your dates.
The BVT Stonehenge Inner Circle Access Calendar 2026–2027 provides a useful starting point for investigating potential access dates before building too much of your wider itinerary around one particular experience.
Remember that a scheduled access opportunity is not necessarily the same as current bookable availability. Dates, tour operation and remaining places should be confirmed before making important travel commitments.
If your dates are still flexible, checking potential Inner Circle opportunities early can help you decide whether it is sensible to shape part of your itinerary around Stonehenge. If flights, accommodation and other important arrangements are already fixed, the better approach is usually to look for an experience that fits the journey rather than weakening the rest of the trip to secure one particular access opportunity.
The most useful question is therefore not simply, “Is Inner Circle better?”
Ask instead:
Would special access meaningfully change what Stonehenge represents within our trip?
If the answer is yes, it may justify planning around it. If the answer is no, you should not feel that a standard visit is somehow a lesser couples’ experience.
Use Inner Circle because special access itself matters to both of you, not simply because it sounds like the premium choice.
🧩 Which Small-Group Stonehenge Tour Should Couples Choose?
Once you have compared the options, the final decision can be simplified by returning to the priorities you identified at the beginning.
🚐 Choose a Standard Small Group If…
You want a strong balance between value, guide interaction and a more personal touring atmosphere without paying for private travel.
For many couples, particularly first-time visitors, this is the natural middle ground.
🌄 Choose Sunrise If…
Atmosphere and photography matter more than convenience, and both of you genuinely accept the early start that comes with the experience.
🌇 Choose Evening If…
You prefer a later rhythm and like the idea of Stonehenge becoming a memorable conclusion to the day rather than its very early beginning.
🗿 Choose Inner Circle If…
Special access is one of the principal reasons for your visit and matters enough to justify planning around the available dates and timings.
🏰 Choose a Combination Tour If…
Both of you genuinely want the additional destinations and are comfortable exchanging some depth at Stonehenge for a broader sightseeing day.
🪨 Choose Stonehenge-Focused If…
The monument itself is the emotional, historical or photographic centrepiece of your day and you would rather give it greater attention than accumulate additional stops.
🚘 Choose Private Instead If…
Privacy, tailored pacing or special-occasion flexibility materially improves the experience enough to justify the additional cost.
The decision does not need to be more complicated than that.
There is no universal “best couples’ tour” because couples travel differently. What matters is identifying the format whose advantages correspond most closely with the experience the two of you actually want.
Once you have identified that format, compare the practical details of the available experiences—dates, departure arrangements, itinerary, inclusions and the amount of time devoted to Stonehenge—before committing. The category helps narrow the choice; the individual tour still needs to work for your actual trip.
Choose according to the shared experience you want—not according to which label sounds most romantic.

Couples can choose between giving Stonehenge greater time and attention, experiencing several destinations together, or paying for the privacy and flexibility of a private tour
🌱 A More Responsible Stonehenge Day for Two
A memorable day together does not require visiting the maximum possible number of places.
Shared touring can reduce the need for separate car journeys, while a well-designed route can make efficient use of travel between London, Stonehenge and any additional destinations. But responsible travel is not simply about transport. It also means resisting the temptation to add places to an itinerary purely because they can be fitted into the day.
Give the destinations you choose enough attention to make the journey worthwhile.
At Stonehenge, follow visitor guidance and remember that the famous stone circle forms part of a much larger and exceptionally important prehistoric landscape. Respect paths, protected areas, archaeological features and the experience of other visitors.
For couples, there is another useful principle: quality can be more rewarding than quantity. A slower day built around one or two meaningful experiences may leave a stronger memory than racing through several attractions simply to say you visited them.
If Stonehenge forms part of a longer journey through Britain, the same principle can guide what comes next. Choose destinations because they genuinely contribute to the trip you want to share, allowing enough time to experience them properly rather than treating each stop as another item to complete.
Choose experiences for their meaning rather than their number.
Travel with purpose. Explore with care.
❓ Frequently Asked Questions
❓ Are Small-Group Stonehenge Tours Good for Couples?
Yes, particularly for couples who value easier guide interaction, a more cohesive atmosphere and a less anonymous experience than a large coach can provide.
A small group can offer a useful balance between travelling independently and joining a larger organised tour. You still benefit from structured transport and guiding while sharing the experience with fewer fellow travellers.
They remain shared tours, however. Couples requiring complete privacy, individually tailored pacing or substantial control over the itinerary may find that a private tour better matches their priorities.
❓ Is Inner Circle Worth It for Couples?
It can be, particularly for milestone trips, bucket-list visits, photography-focused journeys or couples who place strong value on getting closer to the stones.
Inner Circle access can add a distinctive sense of occasion, but it is not necessary for a memorable Stonehenge experience. If special access is not one of your strongest priorities, a standard visit may provide better overall value and fit more easily into your itinerary.
❓ Is Sunrise or Evening Better for Couples?
Neither is universally better.
Sunrise suits couples who value early atmosphere, photography and the feeling of beginning the day somewhere extraordinary—and who genuinely do not mind a very early start.
Evening can suit travellers who prefer a later schedule and want Stonehenge to become an atmospheric conclusion to their day.
Choose according to your natural travel rhythm and the rest of your itinerary rather than assuming one time is inherently more romantic.
❓ Is a Private Tour Better for a Couple?
Only when privacy, flexibility or personalisation materially improves the experience you want.
If you are happy following an organised itinerary and travelling with other visitors, a good small-group tour may provide a more personal atmosphere while offering stronger value than private touring.
If you want control over pacing, have particular interests or value privacy highly, the additional cost of private touring may be justified.
❓ Should Couples Choose Stonehenge-Only or a Combination Tour?
Choose a more focused itinerary when Stonehenge itself is the principal priority.
Choose a combination tour when both of you genuinely want the additional destinations and are comfortable with a fuller, more structured sightseeing day.
Think in terms of depth versus breadth, rather than simply counting how many attractions are included.
❓ Are Small-Group Tours Worth Paying More For?
They can be when easier guide interaction, a more cohesive atmosphere and smoother group logistics matter strongly to the two of you.
The important question is not whether small-group touring is universally worth a premium. It is whether the differences between the tours you are comparing improve aspects of the day that you personally value.
If your priorities are primarily price, transport and itinerary, the additional cost may offer less benefit. If the group environment is an important part of how you experience a destination, paying more for a smaller group may be worthwhile.
When making the final comparison, look at the total cost for two alongside the practical differences between the experiences. The strongest value comes when the additional spend improves something that matters to both of you rather than simply upgrading the tour category.
❓ What Is the Best Stonehenge Tour for an Anniversary or Honeymoon?
There is no universal winner.
Sunrise, evening or Inner Circle experiences may create a stronger sense of occasion, while some couples will genuinely value the privacy and flexibility of private touring. Other couples may prefer a straightforward small-group tour and spend their additional budget elsewhere during the trip.
Prioritise significance, timing, pace and the preferences you share rather than assuming a special occasion automatically requires the most premium tour.
🎯 Final Verdict: The Best Couples’ Stonehenge Tour Is the One That Fits Both of You
Small-group Stonehenge tours can be an excellent choice for couples because they often provide a strong middle ground: more personal than large-scale coach touring, yet more affordable than a fully private day.
But smaller is not automatically better.
A standard small group may be perfect for first-time visitors. Sunrise or evening may suit couples who value atmosphere. Inner Circle access can elevate a genuine bucket-list trip. Combination tours make sense when both travellers want a broader day, while private touring becomes worthwhile when flexibility or privacy has real value.
The final choice should therefore come back to what the two of you actually want to share: the timing, pace, atmosphere, itinerary and level of personalisation that will make the day work.
Before booking, make one final check against the wider journey. Confirm that the departure and return times work with your accommodation, that the itinerary gives sufficient attention to the places you genuinely care about, and that any premium you are paying improves an aspect of the experience that matters to both of you.
If Inner Circle access is important, confirm that the relevant opportunity works with your actual travel dates and that bookable availability remains.
If a combination itinerary appeals, make sure every additional destination earns its place in the day. If private touring is under consideration, identify exactly what the additional flexibility will allow you to do that a small-group experience would not.
Those practical checks protect the decision you have already made.
The objective is not to create the most elaborate Stonehenge experience possible. It is to choose a tour that fits naturally into your journey and allows both of you to enjoy the day for the reasons that brought you to Stonehenge in the first place.
The best Stonehenge tour for a couple is not automatically the smallest, most private or most expensive. It is the one that gives both of you the kind of shared day you will actually value.