A 1980's? 531 Raleigh Royal.
With a bit of TLC it could be a nice bike.
I went for it in the end. I offered him £155, £70 below asking price, and he agreed.
It a July 1987 Worksop build I believe, WK700067 frame number.
The frame is is pretty good nick, but it's going to need a full strip down , clean and regrease. New cables, tubes, the tyres look ok but we'll see. The 6 speed freewheel, chain and rear mech are full of gunk, so maybe ok underneath all the muck. Who knows what I'll find.
A nice project to keep me occupied when the evenings draw in a bit.