What your appear to have bought is as follows;
1. A decent quality frame with a Cinelli bottom bracket shell (worth £80+ if in good condition)
2. A campagnolo NR rear mech (worth £30+)
3. Campagnolo GS (not NR) chainset - with caps (chainset worth £50+ and caps £25)
4. Cinelli Record Stem (if in good condition, £10 to £20)
5. Possibly a Campagnolo seat stem (worth £25+)
6. Campagnolo gear levers (worth £15+)
The brakes are not Campagnolo as they are right hand pull (Campagnolo are left hand). They appear to be more 'basic' Weinmann brakes.
I picked the bike up yesterday, and you are utterly spot on about all of the above. I'm amazed by the depth of knowledge you guys have. The frame feels nice and light - it'd be interesting to compare it for weight to my Raleigh Competition which is made from Reynolds 501 SL tubes.
The seat stem *is* Campagnolo and, as Tel suggested, the front mech is Shimano. The brakes are Weinmann. I can't tell myself if the stem is Cinelli Record (no identifying marks on it) but I'm sure you can tell that just from the shape and I don't doubt you.
The hubs are Pellissier (are those any good?) and the quick release levers are Mavic ones with what looks to me like a nice old-fashioned script on them. The rim on the front wheel has a Mavic sticker on it with a model number, and there doesn't seem to be any identifying marks on the back rim.
I'll try and post some more photos when I get home, I'm on a late shift at work right now. I'll also look up the frame number (or bottom bracket number?), which is stamped on the bottom.
1987 Peugeot Tradition (3-speed Sturmey Archer)
1984 Raleigh Classic 15 (Reynolds 531 ST)
1970s Harry Hall (Reynolds 531)
1986 Raleigh Record Ace (Reynolds 531)
and a project involving two Raleigh Record Sprints and the 531 frame from a 1990s Raleigh Quasar...