The Beatles were obviously the headliners of the Christmas show of 1964, but they weren't up there doing this crazy stuff alone! The host was British radio and now famous creeper, Jimmy Savile. Also on board were Georgie Fame, Michae Haslem, the Yardbirds (with Eric Clapton), Freddie and the Dreamers, Elkie Brookes, and Sounds Incorporated.
Poor Elkie (the only female in the bunch) has a bad memory of the concert:
I'm doing this really lovely jazzy version of a Christmas Song and there's all these girls screaming all the way through it. They were not appreciating it at all -- even though I was giving it rock all. No, they were just saying, 'Get off, get off, we paid to see The Beatles. We don't want to see you--you soppy tart, get off.'
All information came from The Beatles Christmas Book by Belmo and Gary Marsh