Can you help to identify these frames, bikes or parts?

well failing that my second guess is...the first image of two bikes, the one on the left looks pretty close.

http://www.carltoncycles.me.uk/details/lugwork.htm

I think that's right. The seatstay detail looks like a typical Carlton finishing. Mine's a full wrapround, which I think looks fabulous, but the only frames I can think of that had that sort of taper are Carlton and, to a lesser extent, Orbit, though the date would be wrong for that.

If it's a Carlton, it's probably a well-built frame, though they did make a few dogs.