its a peugeot 753 chorus frame from 1990 by the looks of it. top of the line and not naff at all - boo hiss! after this point peugeot bikes did go a bit off the boil, but framesets of this era were great! ridden in the TdF alongside all the other makes - see Adrian Timmis' TdF peugeot elsewhere on here.
PS if my bath scales are wrong it means i'm much heavier than i thought ha ha