It's an S5.2 from 1983, came off a barely used Raleigh Courier - but the 5 speed thumb shifter was smashed so I replaced the rear wheel with a 3 speed AW one.
I built the 5 speed hub into a 27" Weinmann rim to use on a Raleigh Super Lenton which keeps getting pushed back in the queue, I think I'll keep it in this bike for a while but planning to swap the rims to 700c for a better choice of tyres.
The cables run in the brazed on derailleur guides on the top of the BB shell, seems to work fine - just had to add a cable stop to the LH chain stay.