Under The Influence

Name: Under The Influence — Written by Carine Gilbert, Frances Gilbert and Shona Maule
Start: 2026-09-26T20:15:00+01:00
Location: King's Head Theatre

Written by Carine Gilbert, Frances Gilbert and Shona Maule

Speakerphone Productions presents

Mon 21 Sep - Sat 26 Sep

Identical twins land in couples therapy as the world’s most codependent non-couple.

21 Sep

26 Sep

21 Sep

21:15

Main House Unallocated

Book now
22 Sep

21:15

Main House Unallocated

Book now
23 Sep

21:15

Main House Unallocated

Book now
24 Sep

21:15

Main House Unallocated

Book now
25 Sep

21:15

Main House Unallocated

Book now
26 Sep

20:15

Main House Unallocated

Book now

After becoming a viral sensation, identical twins Carine and Frances land in couples therapy as the world’s most co-dependent non‑couple. The session erupts into a hilarious musical intervention and a reckoning that threatens to collapse their lifelong duet.

Best known as @thegilberttwins to their 3M+ followers online, Carine and Frances return to their musical theatre roots with their original score composed by Shona Maule.

Loud, ridiculous, and unexpectedly heartfelt, this new musical comedy explores the chaos of sisterhood, online pressure, and the search for your own voice.

Under the Influence has been awarded a Silver Festival Award by Fringe Theatre Awards and has won Best Musical / Comedy Musical at the Edinburgh Independent Awards!

Post-show meet and greet with Carine & Frances Gilbert on the 21st September!

YOUR VISIT

Age guidance: 14+

Runtime: 60 minutes - no interval

Content Warnings: Strong language/swearing.

Starting times for this show vary. Please note that latecomers may not be admitted. Please ensure you arrive at the venue with plenty of time.

Opening Times: Our bar and box office are open 45 minutes before the performance starts.

Main House Later

★★★★

"A vibrant success fusing musical theatre with sketch comedy"

The Scotsman

★★★★

"Very strong singers... excellent comedic and acting skills.... well worth seeing"

Theatre & Tonic

★★★★★

"Funny, ridiculous, incredibly catchy and then, somehow, properly moving as well."

For The Plot Magazine

★★★★

"Silly, funny & heartwarming this musical is well rounded and the performances feel polished with some impressive vocal performances throughout."

Theatre Audience Podcaast

★★★★

"A vibrant success fusing musical theatre with sketch comedy"

The Scotsman

★★★★

"Very strong singers... excellent comedic and acting skills.... well worth seeing"

Theatre & Tonic

★★★★★

"Funny, ridiculous, incredibly catchy and then, somehow, properly moving as well."

For The Plot Magazine

★★★★

"Silly, funny & heartwarming this musical is well rounded and the performances feel polished with some impressive vocal performances throughout."

Theatre Audience Podcaast

Zoom in

We want to ensure everyone can enjoy a show at King's Head Theatre. By joining our membership or access programmes, you can receive exclusive offers to this and many more shows at KHT:

Access Scheme: 15% off any Band B, C or D tickets and, where needed, a free essential companion. Join today, and your discount will automatically apply after approval and when you're logged in.
KHT Club: For just £60 per year, Club Members are always able to book a Band A ticket to all shows for £25, or 2x tickets if they’re a Joint Club Member. Join today, and the discount will automatically apply when you log in.
Under 35s Membership: £10 Preview Tickets (on selected performances) & £15 Band B, C or D for selected performances. Join today, and your discount will automatically apply after approval and when you're logged in.
N1 Workers & Residents: £10 Preview Tickets. Join today, and your discount will automatically apply after approval and when you're logged in.
KHT Artists Club: £10 Preview Tickets & £15 Band B, C or D on selected performances. Join today, and your discount will automatically apply after approval and when you're logged in.
Multi-buy: Coming to multiple shows at King's Head Theatre? Receive 10% off if you book 2 shows, 15% off 3 shows or 20% off 4+ shows if booked in one transaction.

You must be logged in to your account on the website to access your members-only rewards and offers. If you have any issues, please contact boxoffice@kingsheadtheatre.com and we'd be happy to help!