There was hardly anybody there ... well, if you didn't know it was there, you'd never find it.
But there's some wonderful black-and-white documentaries from the original Festival, including a delightful one scripted by Laurie Lee.
It made me realise what a huge thing it must have been, to see London blazing with light, and fountains playing, and for couples to be dancing outside by the river. And although, of course, I knew about the Festival of Britain, I'd never really thought about it happening right here ... where I so often stroll along, looking at the river, on my way to the Tate, or the Hayward, or the National Theatre.
I love those old films and the posh, enthusiastic voiceovers (even if it niggles a bit that everybody who isn't posh is a cor-blimey-luvaduck stereotype.)
When Laurie Lee's little boy won one of the free Festival tickets that were released in balloons, I wondered if it was in the back of Roald Dahl's mind when he came up with the idea of golden tickets to Willie Wonka's chocolate factory?