(This Is Not A) Happy Room
17th May 2025
Tickets from £23.50
Running time approx 2 hours
Age guidance: 12+
Content warnings: Mentions and references to death alongside loud noises (including a false fire alarm) and smoking.
Production warnings: TBC

Meet the Hendersons, a happily dysfunctional family, reuniting for their dad’s third (or fourth?) wedding. But nobody expects the death of his bachelorhood to become an actual funeral…It would be a waste of the hotel function room not to repurpose it, right?
Hailed as Saltburn meets Schitt’s Creek, this is West End Playwright Rosie Day’s second play after Instructions for a Teenage Armageddon which premiered at Southwark Playhouse before transferring to the Garrick Theatre. With Day’s signature ‘laugh-a-minute’ humour (WhatsOnStage), her new, searingly sharp dark comedy comes exclusively to Windsor.
(This Is Not A) Happy Room stars writer Rosie Day (Outlander), Amanda Abbington (Sherlock), and Declan Baxter (Andor).
★★★★ “An exceptional cast and a razor sharp script…As hilarious as it is heartfelt” – Theatre Weekly
“One of the funniest shows of the year so far” – British Theatre Guide
“Gleefully dysfunctional…Blistering new comedy” – The Times
“A wacky, winning set up…Day has a knack for writing taut comedy” – The Stage
“Packed with humour and unexpected twists” – North West End
Watch The Trailer
Rehearsal Shots
Photography Credit: Mark Senior