Hi Frederick -- Thanks for the pics, wouldn't have thought the tuning you describe would have been possible on a 50s Morris Oxford but without tech spec how do l know?. The incredulous bit is the Goldie silencer!!, got to know how that worked.
SavageGeorge -- County Motorcycles of course. The BSA 500 twin was superb, much smoother and civilized than the 650 [Though the Golden Flash was nice,better than the Rocket]. You claim to have owned a 500 Gold Star, that would put you amongst the elite, you must have been quite wealthy too.
Malc -- Were the dealers on Aston Rd North, Aston Autos and Red House M/cs.
Apparently C&D Autos are still trading in Ullenhall, Nr Redditch supplying BSA parts, thats all l know about them now.
If you start a thread on Mallory Park l'll watch out for it with interest, wasn't a regular but l was there on Easter weekend 1967 when Fritz Scheidegger was killed at the hairpin when the brake pedal broke on his outfit, horrible day altogether. had some good days there though & easy circuit to get to. pete.