The Sopwith Aviation Company was a British aircraft company that designed and manufactured aeroplanes mainly for the British Royal Naval Air Service, the Royal Flying Corps and later the Royal Air Force during the First World War, most famously the Sopwith Camel. Sopwith aircraft were also used in varying numbers by the French, Belgian and American air services during the war.
In April 1919, the company was renamed as the Sopwith Aviation & Engineering Company Limited. In September 1920, the company entered voluntary liquidation after an attempt to build motorcycles failed. The patents and other assets were bought by a new company, H.G. Hawker Engineering.
Early years
The Sopwith Aviation Company (based at Brooklands) was created in June 1912 by Thomas Octave Murdoch (Tommy, later Sir Thomas) Sopwith, a wealthy sportsman interested in aviation, yachting and motor-racing, when he was 24 years old. Following their first military aircraft sale in November 1912, Sopwith moved to the company's first factory premises which opened that December in a recently closed roller skating rink in Canbury Park Road near Kingston Railway Station in South West London. An early collaboration with the S. E. Saunders boatyard of East Cowes on the Isle of Wight, in 1913, produced the Sopwith "Bat Boat", an early flying boat with a Consuta laminated hull which could operate on sea or land. A small factory subsequently opened in Woolston, Hampshire in 1914.
First World War
The company made more than 16,000 aircraft during the First World War. Many more of the company's aircraft were built by subcontractors rather than by Sopwith themselves. These included Fairey, Clayton and Shuttleworth, William Beardmore and Company and Ruston Proctor.
Towards the end of the war, Sopwith took out a lease on National Aircraft Factory No.2, constructed in 26 weeks during the winter of 1917 a mile to the north of the Canbury works in Ham. The company were able to greatly increase production of Snipe, Dolphin and Salamander fighter planes as a result. At the beginning of the war the company had 200 employees; this had reached 6,000 employees by the Armistice.
Post-war diversification and failure
After the war, the company attempted to produce aircraft for the civil market based on their wartime types. These included aircraft such as a single-winged Camel and the Dove, a derivative of the Pup and the Swallow, but the wide availability of war-surplus aircraft at knock-down prices meant this was never economical. In 1919 the company was renamed as Sopwith Aviation & Engineering Company and the factory was re-organised to produce ABC motorcycles under licence; this included an investment of £100,000 in new machinery. In September 1920 the Kingston factory closed for stocktaking and the company decided to enter voluntary liquidation; the works manager at Kingston announced in a letter to the 1400 employees:
At a meeting of creditors held in October 1920 it was explained that although the company had previously accumulated a surplus of £900,000 in 1918, following a slump in the sale of motorcycles the company had liabilities of £705,430 (which included £583,510 for excess profits duty) and assets of £862,630. The amount of excess profit duty was being disputed by the company which had already paid £450,000 in duty. The meeting concluded that the best result would be to sell the business as a going concern.
The Ham factory, which was included in 38 acres of freehold land, was sold to Leyland Motors. The newly formed H.G. Hawker Engineering Company obtained the Sopwith patent rights and a government contract to refurbish Sopwith Snipe biplanes.
Hawker Engineering
Upon the liquidation of the Sopwith company, Tom Sopwith himself, together with Harry Hawker, Fred Sigrist and Bill Eyre, immediately formed H.G. Hawker Engineering, forerunner of the Hawker Aircraft and Hawker Siddeley lineage. Sopwith was Chairman of Hawker Siddeley until his retirement. Hawker and its successors produced many more famous military aircraft, including the inter-war Hart, and Demon; World War II's Hurricane, Typhoon, and Tempest; and the post-war Sea Fury, Hunter and Harrier. These later jet types were manufactured in the same factory buildings used to produce Sopwith Snipes in 1918 as Hawker Aircraft bought the Ham Factory when Leyland's lease expired in 1948.