Legs has sent me a second Pan's People performance from German TV's Eurovision 1970 waiting-for-the-results show. The music here is The Clapping Song: Legs is sure (and I agree) that this version is by Alan Price & Georgie Fame, which makes sense, since Flick and PP worked on their BBC show in 1969. This might even be a repeat of a routine from that show that hasn't otherwise survived.
It still seems to me that Flick had no information about sets, camera angles and lighting while devising these routines: which explains the slightly stagey, all-in-a-row nature of the choreography. I don't mean any criticism here: she's done a creditable job in difficult circumstances. Thanks again to Legs.