Oliver Sidney and Katherine Strohmaier reunite at Upstairs at the Gatehouse for Side by Side by Sondheim, joined by Emily Ooi and Adam Christian David in the four-hander revue that plays Highgate from 10 December 2026 to 17 January 2027.
Oliver Sidney and Katherine Strohmaier, who played Addison Mizner and Mama in the Gatehouse's 2024 staging of Sondheim's Road Show, are back at the Highgate venue for Side by Side by Sondheim, which runs at Upstairs at the Gatehouse from 10 December 2026 to 17 January 2027, with press night on Wednesday 16 December.
Completing the quartet are Emily Ooi, a Royal Academy of Music graduate whose stage work includes Just For One Day at the Shaftesbury Theatre and The Old Vic, and Adam Christian David, a performer, composer and lyricist who appeared in A Little Night Music: In Concert with the LAMDA Alumni Company.
Sidney earned five-star notices at the Gatehouse in You're A Good Man, Charlie Brown, and has also been seen in Oliver! at the Theatre Royal Drury Lane, No Such Thing As Wolves at Birmingham Hippodrome and the UK tour of Goodnight Mister Tom. Strohmaier built much of her career in the United States, in Guys and Dolls at Seattle's 5th Avenue Theatre, Into the Woods at Mount Baker Theatre in Bellingham and The Last 5 Years for Harlequin Productions, and has sung with the Seattle Symphony Orchestra and the Pasadena Symphony.
Ooi's other credits take in The Guy Who Didn't Like Musicals at the Apollo Theatre, Spring Awakening at the Almeida, the concert staging of The Witches of Eastwick at the Sondheim Theatre and Miss Saigon at the Sheffield Crucible. David wrote the new musical Fallen and runs Bookscore, a project composing film-style soundtracks for novels yet to be adapted for the screen; he has also worked on Beyond Beautiful for the LAMDA Alumni Company, Safe Haven for Audible and The Flute for Versed Page.
As we reported when the revival was announced, the production marks fifty years since the revue first played London in 1976, a date that proved to fall halfway through Stephen Sondheim's life. Its songs come from that first half of his career, popular and obscure alike, drawn from Company, Follies, West Side Story and other scores, and the four performers take turns at the piano as well as singing and dancing.
Alongside Sondheim's own music and lyrics, the evening includes music by Leonard Bernstein, Mary Rodgers, Richard Rodgers and Jule Styne, with the original continuity by Ned Sherrin. Amanda Noar directs and choreographs, with Harry Style as musical director and Isaac Bernier-Doyle as associate director and dramaturg. AnnLouise Butt produces for Chromolume.
Performances are at 7.30pm from Tuesday to Saturday, with 3pm matinees on Saturdays and Sundays. Preview tickets start at £20, standard seats are £26 and the final week is priced at £28.
For more information, visit the official website.








