Thanks, yes as I say I've already run another roll in a different camera and I also used a different reel for that one, with identical results.
The curious thing is that the lines are slightly inboard of the slots on the reel ...
I've got another roll in camera at the moment and I'll try that with D76 when it's finished, which should rule in or out a developer issue.

Hard to see it being a problem with the film, otherwise surely the various internet forums would be awash with identical complaints from Foma 200 /120 users.