Crikey, look at this - a time capsule of 1979. And a sort of "pop promo", albeit never shown anywhere until now, for "P.A.s" - my favorite tune on 4 A Sides - using a 'single edit' shorter version of the song.
(Tip off from the ever-alert Jon Dale)
A proper good glimpse of the Carol St squat squalor - including a kitchen area that looks manky and mingin.
Means-of-production demystified with scenes of the recording sessions, record pressing, and record packaging (although it looks like they are sleeving the Peel Sessions EP, as opposed to 4 A Sides, which would be the perfectly circular and self-reflexive thing to do. But then in the record store, the young lad flicks 'n' picks a copy of 4 A Sides. Confusing!)
Although the record by itself abundantly demonstrates this, the glimpse of the three playing together reinforces the sense that Scritti had gone way beyond messthetics by this point - that is some tight white funk.
I wonder if the mysterious Denis Cullum, who posted this on YouTube, but nothing else as yet, has even more footage of the era up his sleeve.
Said to be the melody source for "Hegemony."
If so, derived most likely from this 1979 release featuring Green's hero Martin Carthy.