In April 1967 Record Mirror reported that "Simon Dupree flew down to Glasgow to appear in a pilot programme for a proposed BBC TV series entitled Once A Fortnight."
Twice A Fortnight was a comedy sketch and satire show, directed by Tony Palmer with principal writers Graeme Garden, Jonathan Lynn, Terry Jones, Michael Palin, Bill Oddie and Tony Buffery. It's yet another step along the road for the future Pythons, but all three future Goodies also appeared on the show.
BBC Newsreader Ronald Fletcher linked the sketches with spoof news reports, while pop acts like The Who, Cat Stevens, Cream, The Moody Blues, Simon Dupree and the Big Sound and The Small Faces all turned up to play live.
The 21st October 1967 show with The Who is known to exist.