I certainly never expected a reply that fast! Thanks for the info and pics. I'll try to reciprocate with pics later on.
I actually have 2 S&B model Ms. The first I bought about 20 yrs ago. It originated from RAF Catterick and had been comprehensively trashed, evidence of crashes, very worn gibs, and various non essential bits missing. The headstock bearings and spindle were amazingly good however and with many adjustments the lathe worked remarkably well. It was missing its louver doors, drawbar, collets, steadies and some change gears so when I saw one on. Epay recently with all the missing bits, I had to buy it. More anon, battery low. Gus