Surprised that this is Worksop built. I understood that the scooped seatstay caps and Haden Royal Sovereign lugs were introduced in Nottingham. My 1980 Worksop RRA is quite different.
Nice frame either way.
I realise this is wholly academic with regard to this particular frame but I found this webpage really helpful when dating/placing my own two 1981 Nottingham-built frames, one Raleigh, one Carlton. Might help anyone who stumbles across the thread in future.