See Helena Bonham Carter, Imelda Staunton, Bernadette Peters and more in action
Leading the concert were Michael Ball, Helena Bonham Carter, Rob Brydon, Petula Clark, Rosalie Craig, Janie Dee, Judi Dench, Daniel Evans, Maria Friedman, Haydn Gwynne, Bonnie Langford, Damian Lewis, Julia McKenzie, Julian Ovenden, Bernadette Peters, Siân Phillips, Jon Robyns, Clive Rowe, Jenna Russell, Imelda Staunton, Charlie Stemp, Gary Wilmot and Michael D Xavier.
The special event will see musical and screen stars celebrate the life of the revered song-maker, who passed away late last year.
Matthew Bourne and Maria Friedman staged the one-night-only show, which had choreography by Stephen Mear, musical supervision by Stephen Brooker, arrangements by Stephen Metcalfe, projection design by George Reeve, set design by Matt Kinley, lighting by Warren Letton and sound by Mick Potter with the evening produced by Cameron Mackintosh.
A 26-piece orchestra was conducted by Alfonso Casado Trigo for the event, which raised funds for the Stephen Sondheim Foundation (established under the writer's will), which assists emerging writers, and musicians.