Re:
Ok, I reckon I may have one. Steerer length is about 158mm, top 30mm is threaded If it's of interest, can you pm me an email address & I'll get some photos over tomorrow and you can see if it's the correct model.
I got them off a chap who rode with Dave Baker and Tim Gould, so they may be ex team issue Raleigh. But as I can't be certain what team issue was, I'm not saying that's a definite.