It seems that BSA stands for, Birmingham Small Arms, so that's me standing corrected in my orthopaedic shoes!!
The reason that I am now aware of this gap in my education/general knowledge is that lunch today was at a recommended alehouse called The Bull which turns out to be smack bang in the centre of the Gun Making Quarter of Birmingham. The recommendation came because this pub welcomes dogs, sells real ale and serves home made food - heaven....
The Bull, circa 1800
Himself had steak and kidney pudding and a plateful of fresh vegetables and I had smoked haddock fishcakes and veggies. The dogs had a bowl of water each and a large packet of pork scratchings and kept the pub cat amused to boot!
The 3 boys waiting while I take photo's
The fine Barker Bridge
So to get to this pub - walk down the Farmers Bridge Flight of locks until you get to Barker Bridge, where you go up onto Lower Loveday St and turn left - The Bull is up the road on the left and it is really worth a visit.
Here is a link that gives you information about Birmingham's gun making past.