There was a standing ovation - the man in the seat next to me was in tears - and a crowd gathered afterwards at the stage door, hoping to see Dame Judi (although on such a damp night, my guess would be that she'd have her driver pull up at the front).
I found Peter and Alice extraordinarily moving. Alice Liddell Hargreaves, the real Alice in Wonderland, and Peter Llewelyn Davies, who was JM Barrie's Peter Pan, really did meet briefly in 1932, when she was 80 and he was 35, at the Bumpus bookshop on Oxford Street.
The play is magnificent, superbly acted by Dame Judi and Ben Whishaw as the bruised, forlorn boy who eventually had to grow up.
It's about loss and growing old and resilience and loneliness and obsessive love and I can't imagine that there was a person in the theatre who didn't find a line that spoke to them.