Cheers for the replies all.
It was after a few visits that I realised what I was after were called collars. The place is busy though, so even if I go once a week and speak to exactly the same people, I still get the same "whats a collar?" conversation pretty much every time.
Been given a link to a quality butcher which I'll have a look at when I want something decent.
Dropped on a bit of luck tonight. It seems my local Bookers have extended their range a bit. While hunting for ribs I came across something described as frozen neck fillets. 13.6kg for £37.99. On closer inspection the boxes themselves were labelled frozen boneless pork collars.

Individually wrapped mini pork butts. Plenty of fat running through them but no fat cap. About 2-2.5kg each it seems..proper made my night. Im guessing the same things mentioned in Toby's thread.
Got one defrosting for the weekend will post results.
Nick