A quick rummage revealed that the singer on "Assured Energy" was called Debbie Pritchard who, it transpired, had been the singer in Current Obsessions. What a cool coincidence! If I'd looked more closely, I would've noticed that there were Cardiff addresses on the Current Obsessions sleeve so it all makes perfect sense A different version of "Assured Energy" also appears on "Always Sunshine, Always Rain" (also on Tiny Global Productions), Debbie's cd with Spike - the same Spike thanked on the Current Obsessions sleeve - that was released in June, 2018. Another one for the wants list along with "Bimini Twist" (yet another on Tiny Global Productions), Spike's recent lp with the wonderful Alison Statton. Phew.
PS There's an in-depth article from September 2017 on Stuart Moxham's post-Young Marble Giant work here. (Thanks for the link, Esther!)