Ian,
I Have a pretty good idea that ALL the Verve/MGM stuff originally came from a cutout distributor in Upper Darby, PA, USA - John Lamont's - House of Sounds or as Val S called it 'House of Sh-ts, this was a six storey warehouse FULL of deletions and overstocks. Back in 1978 we (Arthur, Me) spent a whole day going through a mountain of 45s piled up all over the wooden warehouse floor, it was HUGE 'a real treasure hunt' we pulled Tony Middleton issue MGM and lots more and found the first copy of 'Greater Experience' John Anderson bought often from there and probably shipped pallet loads during the early 70s including the MGM/Verve load.
Have a Great Christmas ALL
Dave.