
ABC
.
Years
c. 1923
Engine
.
Body Style
.
Production
.
Power: Weight
.
Dimensions
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AJS Nine Tourer
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Years
c. 1930
Engine
.
Body Style
.
Production
.
Power: Weight
.
Dimensions
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AJS Nine
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Years
c. 1936
Engine
.
Body Style
.
Production
.
Power: Weight
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Dimensions
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Albert
Ex-Argyll engineer bought coachmakers to make high-quality aluminium bodies, Rolls-Royce-style radiator, and an engine from Gwynne who bought out the company in 1920. Expensive and poor reliability reputation – most made by 1923.
Years
1919-29
Engine
1495cc
Body Style
Mosty tourers.
Production
c. 2000
Power: Weight
.
Dimensions
.
Photo: Wikipedia

GN Cyclecar
Founded by Godfrey (later HRG q.v.) and Nash (later Frazer Nash) in Hendon, using their own engine and Peugeot parts. The company was bought out in 1919 and moved to Wandsworth. The cars were light and fast, and chain-driven.
Years
1910-14; 1919-23
Engine
1100cc V2
Body Style
Open cyclecar; racing specials
Production
c. 4000
Power: Weight
.
Dimensions
.
Photo: Flickr

HRG 1.5-Litre
Brooklands racing friends, Godfrey and Halford set up with Robins (ex-Trojan), in Norbiton. The cars were heavily influenced by Godfrey’s time with GN and Frazer Nash (q.v.). 50% the cost, and 60% the weight of the contemporary Aston Martin.
Years
1935-39
Engine
1497 S4 OHV (Meadows)
Body Style
Sportscar
Production
26
Power: Weight
.
Dimensions
.
Photo: Flickr

HRG 1100 / 1500
In 1938, HRG announced models with a shorter wheelbase and a Singer OHC engines. The models continued post-war.
Years
1938-50/1939-56
Engine
1074/1496cc S4 OHC (Singer)
Body Style
Sportscar
Production
49 / 111 + 4 DOHC
Power: Weight
.
Dimensions
.
Photo: Flickr

HRG Aerodynamic
Aero skin on the same chassis, and with same mechanicals as 1500.
Years
1945-49
Engine
1496cc S4 OHC (Singer)
Body Style
Sportscar
Production
45
Power: Weight
.
Dimensions
.
Photo: Flickr

Stoneleigh 9 HP
Stoneleigh was a sub-brand of Siddeley, a pre-WWI joint venture with BSA (q.v.), based on their 13.9 hp car. In this second iteration, inspired by Rover, it was a ‘nippy performer with a curious bounding motion’. The Coop used them as vans.
Years
1922-24
Engine
1000cc
Body Style
Tourer, van
Production
Several hundred
Power: Weight
.
Dimensions
.
Photo: Wikipedia