just seen this trawling through old posts on Raleighs.
Sorry to disappoint, but these were built at Raleigh in Nottingham, not Worksop (Carlton). Worksop factory closed in 1980/81.
Raleighs weren't built in Worksop.
Good-ish bicycke though.
A little more info - as I understand it from an ex Carlton framebuilder, the Worksop serial numbered bikes were built in Nottingham with the ex Carlton framebuilding equipment, and a number of the employees from the Carlton factory, they (the framebuilders at least) were given the option to relocate or take redundancy.
I know they kept making W serial number bikes until at least 86 as I have a bike with just such a number, a special order by the looks of it, as it doesn't feature in any catalogues.
For future clarity, this bike could not be a 73 because as I understand it the W for Worksop, N for Nottingham etc. serial number system didn't start till after '73.
Roadking - you have mentioned the Lightweight Unit a few times - is that the ex Worksop equipment and people making bikes like threse, or was another separate section? I know the W serial number frames after 81 were made separately from the N serial number run of the mill stuff, but their is a gap in my knowledge about the Lightweight unit, apart from the reference to it in catalogues, I haven't seen one of the bikes to check it out.