A slight diversion: none of the regular dancers appear on this clip of Johnny Nash singing I Can See Clearly Now. So why am I posting it? Watch and see if you can work it out:
The dance troupe are called Les Girls. a play-on-words, since this clip is from Les Dawson's TV show Sez Lez. And if their choreography seems oddly familiar, that's because our own Flick Colby was the choreographer on this show.
Thanks to Jez for pointing this clip out to me.