After a stint away from the forum, I've invested in some NJS goodness and have ended up with one very nice bottom bracket going spare.
It is used, genuine Keirin used actually, and appears to be in very good nick. A couple of tool marks on the lockring, but nothing other than that. Ball bearings seem good. The pictures tell the story.
I'm not in London, so £45 posted?
Shell Type: BSA (English)
Axle Type: Square Taper ISO
Axle Width: 109mm