Hi Guys, thanks for the warm welcome and for the quick responses. I found a company in Cheltenham called ADE Turf that service pro greens keeper equipment including reel grinding...not sure if they are any good. Cheltenham is a bit of a hike from me so I think I will try Deejay's recommendation first and contact the local bowls club. I managed to take some snaps of my SB this afternoon so here goes...
The mower has obviously had a Briggs & Stratton motor added and the old one replaced. I have the manuals for both.