- 1Mining trolley locomotive mechanical parts (GEC/2/2/1/57)
1977-1980, file - 2Selection Trust for Roan Antelope mechanical parts for 750BHP diesel electric locomotives (GEC/2/2/2/226)
1957, file - 3Roan Antelope Copper Mines Ltd electric shunting locomotives mechanical parts (GEC/2/2/19/2)
c 1950, file - 4Mechanical parts for overseas railways (GEC/2/2/2/324)
1953-1955, file - 5Locomotive mechanical parts for overseas railways and for the British Transport Commission DH & DE locomotive prototype (GEC/2/2/5/72)
1953-1956, file - 6Mechanical parts for overseas railways (GEC/2/2/2/362)
1947-1954, file - 7Electrical and mechanical equipment layouts for Class 86 (AL6) locomotives, Rhodesian Selection Trust and Danish State Railway (GEC/2/2/2/461)
1970-1971, file - 8General arrangements of double ended battery locomotive type EM2-B1 and arrangement of electrical equipment for electric trolley locomotives (GEC/2/2/2/642)
1944-1957, file - 9Electrical equipment layouts including for South African Railways and Harbours, National Coal Board and Roan Antelope Trust (GEC/2/2/4/73)
1957-1989, file - 10Metropolitan-Vickers Electrical Co photo albums (GEC/4/3/5)
c 1950-1953, file - 11Metropolitan-Vickers Electrical Co Ltd tender specifications (GEC/3/10/33)
1949-1950, file - 12Associated Electrical Industries test specifications (GEC/3/11/1)
1950-1964, file - 13English Electric Company test specifications (GEC/3/11/8)
1961-1962, file - 14Africa photographs (GEC/4/2/17)
c 1930-1972, file