Top of the Pops, 11 March 1971: T. Rex Perform Hot Love while Pan’s People dance on a separate stage.
From the old blog, Wednesday, 21 April 2010:
Here’s a little vintage Pan’s People from TOTP in 1971. It’s a performance by T. Rex in the studio, with Pan’s People giving more of a supporting performance than a full dance routine. Well worth watching nonetheless. Those knitted (or is it crochet?) bikini tops are just so 1971.