I have a .22 SS Carbine and have tried to het a year and country of manufacture from BSA and Knibbs. Both couldn't help. It has an S prefix before the numbers , no maxi rail, plastic trigger and has the barrel weight for a mod and the rear sight is on a raiser. It's in lovely condition and seems very well made. The barrel is stamped BSA Guns England rather than BSA Guns LTD England.

It's a bit frustrating not knowing its year of manufacture or where made if anyone has any ideas they would be welcome.
Cheers