The evening of December 26, 1967 was the first airing on BBC television, unfortunately in black and white, of “Magical Mystery Tour” by the Beatles. Featured in the film was the Bonzo Dog Doo-Dah Band, performing “Death Cab for Cutie.” Earlier that very same day, the Bonzos appeared on the ITV network, in the premiere episode of “Do Not Adjust Your Set,” featuring Michael Palin, Terry Jones, and Eric Idle.
https://youtu.be/RyZSgy5wmJk