The English Electric Company was formed on 14th December 1918 and over the following year acquired Dick, Kerr & Company of Preston, Willans & Robinson of Rugby, the Phoenix Dynamo Manufacturing Company of Bradford, and Coventry Ordnance Works. After the First World War the various German owned Siemens works were distributed to different UK companies and in November 1919 English Electric acquired the Siemens Brothers Dynamo Works at Stafford, which became the company headquarters in 1931. Coventry Ordnance, primary output naval guns, did not feature in the gradual product rationalisation which took place between the First World and Second world Wars. Willans & Robinson’s Rugby works specialised in prime movers, steam, hydro and internal combustion, and their Stafford works on power station and distribution electrics, including transformers and large electric machines for applications such as mining and steel works. Dick Kerr & Company continued building equipment and vehicles for bus, tram and railway applications with the Phoenix Dynamo Manufacturing Company concentrating on medium and small electrical machines. Involvement with aircraft continued a small scale. By 1929 the company was in financial trouble and an American syndicate fronted by Lazard Bros. put in new capital. In 1930 Westinghouse of Pittsburgh entered into an agreement with the company for the exchange of technical information relating to steam turbines and electrical apparatus. This cooperation continued into the 1950s. 1930 saw the closure of Preston West works and the transfer of traction electrical design and manufacture to the Phoenix Dynamo Manufacturing works. The Westinghouse influence included top management changes with Sir H Mensforth becoming chairman and George Nelson managing director. Both had been with British Westinghouse at Trafford Park. The early 1930s saw a remarkable improvement in the company’s finances and domestic appliance manufacture was started at Bradford and Stafford. In 1936 they began production of diesel locomotives at Preston and were later involved in the production of the Deltic locomotive for British Rail, presaging the end of steam traction in the UK. Extensive shadow factory building for war production commenced in the late 1930’s, including at Preston East works and Salmesbury for aircraft production and at East Lancashire Road, Liverpool for D. Napier aero engines. A large variety of military equipment built during the war included thousands of Cromwell tanks from Stafford and over 3000 Handley Page Hampden and Halifax bombers from Preston and Salmesbury. After the war manufacture of smaller products from Bradford and Stafford moved to the large Liverpool works. This included electrical distribution transformers, switchgear, fuse gear, fractional horsepower motors and domestic appliances. Napier’s continued engine manufacture with the development of the ’Deltic’ diesel engine, mainly for marine applications. The nearby Netherton works took over the manufacture of large hydro-electric turbines and generators from Willans and Stafford. In 1942 English Electric acquired D. Napier & Son Ltd and Marconi in 1946. The company went on to extend their railway interests with the acquisition of the Vulcan Foundry and Robert Stephenson and Hawthorn Ltd in 1955. The company tried to take over The General Electric Company (GEC) in 1960 but failed. Traction manufacture, but not the offices, moved back to Preston East works and ‘K’, ‘RK’ and ‘V’ engine design and manufacture moved from Willans to Preston West works which was now also used for locomotive building. Kidsgrove works in Stafford made industrial controls and for a while was a major player in the UK computer industry, merging with Leo Computers and then into ICL. Train performance calculations were an early user of the mid-fifties ‘Deuce’ computer. Preston also became a major player in the aircraft industry taking over the wartime RAF/USAF base at Warton aerodrome - major design and manufacture contracts included Canberra bombers and Lightning fighters. Rationalisation in the 1960s resulted in English Electric Aviation becoming 40% of the new British Aircraft Corporation. In 1961 English Electric took over Dorman Diesels Ltd which in turn had acquired W. G. Bagnall Ltd. In 1966 English Electric Diesels merged with Ruston and Hornsby which already included Paxmans. This company eventually became GEC Diesels. Elliott Automation was acquired in 1967. The following year GEC took over English Electric, ending its independent existence.

In 1959 Associated Electrical Industries (AEI) created a self-contained company named AEI Traction Division to control the railway activities of both Metropolitan Vickers Electrical Company Ltd and British Thomson-Houston (BTH). Included in this company were the interests of the Metropolitan-Vickers General Railway Signal Co., (later to become GEC General Railway Signal). The newly formed company established its headquarters, at Trafford Park, Manchester, and operated from three other sites, Attercliffe Common in Sheffield, Rugby Works, and Stockton Works supplying traction motors, machines, control gear and mechanical parts of locomotives. AEI Traction Limited’s product range encompassed electric and diesel-electric locomotives; electrical equipment for tramcars, trolley buses, trolley mining locomotives, traction motors and gears. In 1969 AEI Traction Division merged with English Electric Traction to form English Electric-AEI Traction Division.

Queensland Rail Limited also known as Queensland Government Railways was established in 1865. The railway stretched from coastal ports such as Brisbane, Cairns and Rockhampton, inland for the transportation of farming produce for exportation. The first railway line was built from Ipswich inland to Grandchester in 1864 and the first passenger train service ran on 31 July 1865. The line was extended to Darling Downs and Brisbane in 1875. Between 1899 and 1915, a large network of privately owned railways lines was built by mining magnate, John Moffat, which included Mungana, Mount Molloy, Mount Garnet, Mount Mulligan and the Etheridge mining field. As a result of falling share and copper prices, the Queensland Government took over these railway lines in 1919. A major restructure on 1st July 1991 with the introduction of the Transport Infrastructure (Railways) Act meant that Queensland Rail would begin to operate on a commercial basis as a State owned corporation. In accordance with the Queensland Rail Transit Authority Act 2013 (QRTA Act), Queensland Rail ceased being a government owned corporation from the 3rd May 2013 and the company became a wholly-owned subsidiary of this statutory authority.

Crossley Brothers Ltd was the successor company to Crossley Brothers. Following early success with the Otto engines, Crossley Brothers expanded and was registered as a limited company in 1881. In 1882, the company moved to new premises in Pottery Lane, Openshaw, Manchester. In 1891 the company began producing oil fuelled engines and in 1896, the company acquired rights to manufacture engines on the diesel system, producing their first diesel engine in 1898. By the beginning of the 20th century, some petrol engines had been introduced, along with production line technology, and from 1901 petrol engines were being supplied for road vehicles. This led to the establishment of a second company, Crossley Motors Ltd, in 1906. This company had operated from 1904 as the vehicle manufacturing arm of Crossley Brothers based at the Pottery Lane factory. Crossley Brothers Ltd began to expand nationally following the First World War, beginning in 1919 with the acquisition of Premier Gas Engines of Sandiacre, Nottingham and H P Saunderson & Co of Elstow Works, Bradford in 1924. Both new subsidiaries retained their own names. Manufacture of diesel and petrol engines at Crossley Brothers Ltd remained steady until the 1960s, when sales began to fall. To improve on designs that were over 40 years old, Crossley Brothers Ltd entered into an agreement to manufacture the French Pielstick design of diesel engine in 1962. Production was initially carried out at Nottingham based subsidiary Crossley Premier Engines Ltd but failed to save the company. In 1965, the receivers were called in and the company was restructured, with subsidiaries including Crossley Premier Engines Ltd sold off. In 1968, Crossley Brothers Ltd was acquired by the Amalgamated Power Engineering Group and was renamed APE-Crossley.