Sherlock Holmes Open Air Theatre Review: Save Your Money

Last updated: 16 May 2026

By Tristan · Arts, exhibitions and creative culture

This is an opinion piece. Views expressed are the author's own and do not constitute professional advice.

Cool Factor: 2/5

This Sherlock Holmes Open Air Theatre production opened the 2026 Regent's Park season on 2 May, and runs until 6 June. We went in with high hopes, given the venue, the source material and the talent involved. Sadly, we left disappointed. The show is camp, overlong and far too dependent on the Cumberbatch BBC series and the Robert Downey Jr films for its character work. The setting still dazzles. The production, regrettably, does not.

Cool Factor

★★☆☆☆

2 out of 5: Lukewarm

What is the Sherlock Holmes Open Air production?

The Sherlock Holmes Open Air production is a world premiere written by Joel Horwood and directed by Sean Holmes. Joshua James plays the title role, with Jyuddah Jaymes as Watson. The wider cast includes Nadi Kemp-Sayfi as Mary, Marcia Lecky as Mrs Hudson and Lucia, and Patrick Warner as Mycroft Holmes and Thaddeus.

Set in 1890, the plot follows Holmes and Watson as a mysterious woman and a stolen jewel arrive at 221B Baker Street. The chase that follows runs across London and along the Thames. The production is presented by agreement with the Conan Doyle Estate, supported by Cockayne Grants for the Arts, and opens Drew McOnie's second season as artistic director at Regent's Park.

On paper, then, this should be a banker. A serious creative team, a major venue, a globally recognised character and a famously atmospheric outdoor stage. Unfortunately, what reaches the boards does not live up to that pedigree. The result is the kind of show that you can imagine reading as fun on a press release, and watching as a slog from the stalls.

The setting still steals the show

First, credit where it is due. The Open Air Theatre at Regent's Park is one of the loveliest venues in London. The auditorium sits inside a Royal Park, surrounded by trees, sky and the soft hum of the city beyond. It has been a fixture of the London summer for almost a century, and is one of only a handful of permanent open-air theatres in the country.

On a clear evening, with a Pimm's in hand and bats just starting to wheel overhead, there are few better places to watch theatre in this city. Therefore, no review of any production here can ignore that backdrop. The atmosphere does much of the heavy lifting before the lights even come up.

Even when the play in question disappoints, as this one did, the venue itself never quite lets you down. Indeed, this is the saving grace of the entire evening. It is also a major reason why this Sherlock Holmes Open Air Theatre review has not landed at a single star.

First impressions and the camp problem

Things start with promise. The opening establishes a properly Victorian mood, and the design team have clearly worked hard to make Regent's Park feel like 1890s London. For a few minutes, you settle into your seat and think this might be a treat.

However, the trouble starts as soon as Holmes and Watson speak. Almost immediately, the dialogue tilts towards exaggerated comedy. Holmes himself plays as twitchy and manic, more eccentric clown than calculating mind. The audience around us laughed in the right places, and the production is clearly built to land laughs. Yet the tone never settles.

By the twenty-minute mark, we already had a faint sinking feeling. The production was going to mistake camp for confidence, and broad comedy for character. Frankly, camp is fine when it is committed and aware of itself. The trouble here is that the show keeps reaching for genuine menace and mystery in the same scenes that play for cheap laughs. The two registers cancel each other out. Unfortunately, that mismatch never quite resolves.

The Cumberbatch and Downey Jr problem

Joshua James is not a bad actor. Quite the opposite. His CV runs through the RSC, the National Theatre, the Globe, the Royal Court and the West End run of Stranger Things: The First Shadow. He clearly knows what he is doing. The problem is the Sherlock he has been asked to play.

This Holmes is essentially a greatest-hits compilation of recent screen versions. The rapid-fire deductions, the staccato delivery and the social abrasiveness all read as Cumberbatch in the BBC series. The physical chaos, the boyish smirk and the slightly drug-addled swagger sit closer to Robert Downey Jr's Guy Ritchie films. The two registers do not always combine well, and the original Conan Doyle character is largely absent. There is little of the cold, methodical observer who reads a man's life from his shoes.

Consequently, the result feels like a tribute act rather than a fresh stage interpretation. For a world premiere staged at one of the country's most prestigious open-air venues, that is a missed opportunity. A new stage Sherlock should give us something we cannot get on Netflix or Sky. This one gives us a slightly underpowered version of both.

Watson, the ensemble and what was missing

Jyuddah Jaymes plays Watson with charm and warmth. The duo has chemistry when the script lets them slow down, and the moments where Watson grounds Holmes are the strongest in the show. Notably, Patrick Warner finds genuine notes of humour and menace as Mycroft and Thaddeus. Marcia Lecky is a steady presence in her doubled roles, and Nadi Kemp-Sayfi brings real intent to Mary.

However, the ensemble work as a whole is uneven. The bigger group scenes feel busy without being precise, and several of the doubled roles are unclear in the moment. Accents drift. Reactions land late. The show is at its best when it is small and quiet, with two characters in a room. It is at its weakest when it is loud and frantic, which is most of the time.

Crucially, Watson risks being lost in the noise. In the BBC series, Watson is the audience's emotional anchor. Here, the script keeps interrupting him with another twist, another set-piece, another comic beat. The version of Holmes and Watson we wanted to spend the evening with rarely gets a chance to breathe.

A script that borrows too freely

Joel Horwood is a capable playwright, with a strong track record. Here, however, the script feels caught between three masters. It clearly wants to nod to the Conan Doyle stories. Equally, it is steeped in the BBC series tone. It also borrows action set-pieces straight out of the Ritchie films. The result is a Frankenstein of references rather than a coherent original work.

Specifically, several plot beats land like greatest-hits remixes. There is a mysterious woman, a precious jewel, a trip down the Thames, and a wider conspiracy involving Mycroft. Each of those elements arrives loaded with screen baggage, and the production rarely pauses to make any of them feel new. Furthermore, the recurring fourth-wall asides feel pulled from a different show entirely.

For audiences who have never watched Sherlock or A Game of Shadows, some of this will land. For anyone who has watched both, it plays as a slightly underpowered tribute. The official content notes also flag racism, colonialism, scenes of violence, drug references and occasional swearing. Worth knowing in advance, especially if you are bringing teenagers, since the production is recommended for ages 12 and up.

The runtime problem: too long, too tangled

We need to talk about the length. Some third-party listings show the show as having no interval, but the performance we attended did have one, and it still felt long. Including the interval, the running time stretched well past the two-and-a-half-hour mark. For an outdoor show on a chilly May evening, that is a tough sell.

Crucially, the structural problem is not just the clock. It is the storytelling. The plot keeps adding twists, returns, fake-outs and side characters. By Act Two, the central mystery has been complicated to the point where the stakes feel theoretical rather than urgent. Several audience members around us were checking phones for the time.

By comparison, Conan Doyle's stories work because they are tight. A single mystery, a single deduction, a single emotional beat. This Sherlock Holmes Open Air production tries to do four mysteries at once. It ends up resolving none of them with real impact. A leaner version, with one strong case at its centre, would have done the source material far more justice.

Honest critical observations: the interval walkout

The clearest signal of the show's struggles came at the interval. The two people sitting directly next to us packed up their bags, finished their drinks and did not return. They were not alone. We watched several seats around the stalls stay empty for the second half. To be clear, this is unusual. Audiences at Regent's Park are typically engaged, even when the weather works against them.

Therefore, when paying customers walk out of an evening performance at one of London's most beloved venues, the production has a problem. We are not pretending we counted, and a few empty seats can mean late trains or babysitters. Yet the visible thinning out around us, paired with a noticeable drop in laughter and applause after the interval, told a story.

To put it plainly, when the audience next to you leaves and does not come back, your show needs to ask itself a few honest questions. We left feeling the production has not yet asked them.

What actually does work

To be fair, this Sherlock Holmes Open Air Theatre production is not a total wash. The technical and design craft is genuinely strong. The lighting is properly atmospheric, especially as dusk falls over Regent's Park and the stage takes over from the natural sky. The score and sound design make the most of an outdoor space that is famously tricky to mic well.

In addition, several of the supporting performances are committed and detailed. The costumes feel period-appropriate without slipping into pantomime. When the show slows down and lets a quiet moment land, you can briefly see the better production lurking inside this one.

In short, the components are strong. The trouble is the script and tone wrapping around them. A great frame cannot rescue an off-balance picture, and that is what this production puts on stage. The team have clearly worked hard. The brief they were working to, however, lets them down.

Sherlock Holmes Open Air tickets: are they worth it?

Tickets for the Sherlock Holmes Open Air run start from £19, with most stalls and central seats sitting between £35 and £75. Premium and matinee performances reach above £80. For a show of this length on a chilly outdoor evening, that is a meaningful spend, especially for a family of four.

Comparatively, you can see other West End plays for similar money. We have reviewed Stranger Things: The First Shadow at the Phoenix Theatre if you want a comparison with another James-fronted production, and we also covered Dracula's West End run, which leans into camp far more knowingly than this Sherlock does.

Honestly, if your budget is tight, we would steer you towards the venue itself rather than this particular show. The Open Air Theatre's Cats revival, also part of McOnie's 2026 season, runs from 25 July to 12 September and looks like a stronger bet for the money. A Midsummer Night's Dream, from 20 June to 18 July, is a safer Shakespeare option. This Sherlock, sadly, we cannot recommend at full price.

Practical info: getting there, what to bring

The Open Air Theatre sits in the Inner Circle of Regent's Park, NW1 4NU. The nearest tubes are Baker Street and Regent's Park, both around a 10 to 15-minute walk. Buses 13, 18, 27, 30, 74, 82, 113, 139, 189 and 274 all serve the area.

Crucially, dress for the weather. Even in May, evenings get cold once the sun drops. We packed layers, and we still felt the chill by Act Two. Blankets are available to hire on site, and the bar serves Pimm's, prosecco and pizzas before the show. Picnics are welcome in the park beforehand. Performances proceed unless conditions are extreme; if cancelled, ticket-holders receive an exchange or refund per the venue's policy.

Recommended for ages 12 and up. The production includes themes of racism, colonialism, scenes of violence, references to drug use and occasional swearing, so worth checking before booking with younger family members.

Sherlock Holmes Open Air verdict: 2/5 Lukewarm

Overall, this Sherlock Holmes Open Air production scores 2/5 Lukewarm on our Cool Factor scale. The setting saves it from a 1/5. The technical craft, design and ensemble flourishes save it again. Yet the script is derivative, the central performance leans too hard on screen versions, the runtime drags, and the audience around us voted with their feet at the interval.

To summarise, we wanted to love this. A new Sherlock Holmes mystery at Regent's Park, with a serious creative team and a major venue, should be a slam-dunk. Unfortunately, the show we saw felt like it was trying to be the BBC series, the Guy Ritchie films and Conan Doyle all at once, without committing to any of them. The result is camp, overlong and oddly forgettable.

Final word: a 2/5 Lukewarm. The Open Air Theatre setting and the design team's craft earn the score. The campy script, the derivative central performance and the brutal runtime are what stop this Sherlock from climbing any higher. We would not block-book a return visit, and the empty seats next to us at the interval suggest we were not alone in feeling that way. If you have a ticket and the weather is good, you will not have a terrible night. If you are choosing between this and the rest of the 2026 season, save your money for Cats or A Midsummer Night's Dream instead.

Frequently asked questions

Is the Sherlock Holmes Open Air production worth seeing?

In our opinion, only at a heavy discount. The setting is wonderful, but the production itself is camp, derivative and far too long. We would direct most people to the rest of the 2026 season instead.

How long is the Sherlock Holmes Open Air show?

The performance we attended ran with an interval and stretched well past two and a half hours. Some third-party listings still show no interval, so confirm running time with the venue directly on the day of your visit.

Who is in the Sherlock Holmes Open Air cast?

Joshua James plays Sherlock, with Jyuddah Jaymes as Watson. The cast also includes Nadi Kemp-Sayfi as Mary, Marcia Lecky as Mrs Hudson and Patrick Warner as Mycroft. The production runs from 2 May to 6 June 2026.

How much do Sherlock Holmes Open Air tickets cost?

Tickets start from £19, with most stalls seats sitting between £35 and £75. Premium and matinee performances reach above £80. TodayTix typically runs £25 Rush tickets for some Open Air Theatre performances, so it is worth checking on the day.

How does the Sherlock Holmes Open Air production compare to BBC and film versions?

That is exactly the problem. The production borrows tone, pacing and character work from both the BBC series and the Robert Downey Jr films, and rarely makes a strong case for its own identity. If you adore those screen versions, you might enjoy a live tribute. If you prefer Conan Doyle's source material, this is unlikely to satisfy.

Is the Open Air Theatre any good in bad weather?

It is one of the most atmospheric venues in London on a clear night. Performances proceed unless conditions are extreme, with refunds or exchanges available per the venue's policy. Bring layers and a blanket regardless of the forecast.

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