Pride and Clark was a huge mostly-motorcycle dealer in South London, occupying most of a city block. They seemed to sell anything motor related, including 3wheelers, cars and occasionally boats. They also sold accessories and related clothing, kind of a forerunner of today's Powersports dealerships. They were large enough they could negotiate exclusive deals from manufacturers, notably the bargain priced Red Panther motorcycle in the 30s. They seemed to have something-for-everyone ads like the one above in every British magazine.
The company started in the 1920s and lasted till about 1980. Memoirs here.