British Salmson Aero Engines Limited, Raynes Park, London.

The company was originally set up in 1930 to manufacture engines for light aircraft.  The demand for these engines did not result in sufficient orders and so in 1934, through their French connections, they took a licence to manufacture the Salmson S4C.

The main difference on these English built cars was the inclusion of a 4 speed gearbox with synchromesh on 3^rd and top gears.  The engine was the same 1471 cc engine with twin overhead camshafts.  This was marketed as the 12/55 and with a single carburetor gave 55 bhp and a top speed of about 70 mph depending on the body type.  Bodies were very English in style and were supplied with both saloon and touring coachwork by Ranalagh and Newns.   There was also a 12/70 model with twin carburetor which gave 70 bhp and a top speed of about 80 mph.  About 250 of these two models were built.

Continuing the French connection the 1937 model was again the Salmson SD4 made under licence but with the engine bored out to give 1730 cc, but this proved to be more than the castings would accept with reliability.  The engine size was therefore reduced to the same dimensions as the French car at 1596 cc.  Unfortunately this did not provide enough additional power to improve on the performance of the previous model and in part this was because of the heavier coachwork being fitted.  The chassis was fitted with the same transverse leaf spring independent front suspension and hydraulic brakes as the French car.  Bodies were a 6 light saloon and a drophead tourer.  Production of this model was about 75 ending in 1938.

For 1938 the company launched the 20/90 model which had no connection with the French marque.  It featured a 6 cylinder twin overhead camshaft engine of 2580 cc with an output of 90 bhp and a top speed of over 90 mph.  Initially fitted with Bendix hydraulic brakes and subsequently Lockheed.  Only 15 cars were built although four body styles were listed.  These were a two seater sports with either slab tank or sloping back, a 2 door sports saloon and a drophead tourer.  Production ceased, as with so many other makes, in 1939.

The company had throughout imported French Salmsons which proved to be a more profitable enterprise.