Field, Infantry & Armoured Workshops 21 on
| Dates | Location | Higher Formation/Remarks |
| 21 Malayan Infantry Workshop | ||
| 1955 | Malaya: Bentong | From 5 Station Workshops |
| 31 Armoured Workshop | ||
| 1951 | Germany: Rotenburg | |
| 1956: Joined 4th Inf Division as 17 Infantry Workshop | ||
| 32 Armoured Workshop | ||
| 1953 | Germany: Langenhagen Barracks, Hannover | |
| 1958 | Germany: Pinewood Camp, Liebenau | |
| 1961: Absorbed into 7 Armoured Workshop | ||
| 50 Infantry Workshop | ||
| England: Taunton | ||
| later amalgamated with 8 Infantry Workshop | ||
| 51 Infantry Workshop | ||
| 1950’s | Cyprus Dhekelia | |
| 70 Aircraft Workshop | ||
| c1970 | England: Middle Wallop | |
| Sep 70: Renamed 70 Field Workshop (Aircraft) | ||
| Apr 06: Disbanded | ||
| 71 Aircraft Workshop | ||
| 1966 | Germany: Hobart Barracks, Detmold | From 1 Light Aircraft Workshop |
| 1971: Renamed 71 Field Workshop (Aircraft) | ||
| 1977: Amalgamated with 73 Aircraft Workshop | ||
| 1990: Op GRANBY in support of 4 Regiment AAC | ||
| 1994? 71 Aircraft Workshop REME expanded and became 7 Battalion REME consisting of 3 semi-independent Aircraft Workshops. | ||
| 72 Aircraft Workshop | ||
| ?? | England: Middle Wallop | |
| Oct 66: Disbanded | ||
| 1990's?? | ?? | |
| 73 Aircraft Workshop | ||
| 1968 | Germany: Wietzenbruch Airfield, Celle | Formed |
| 1971: Renamed 73 Field Workshop (Aircraft) | ||
| 1977: Amalgamated with 71 Aircraft Workshop REME in Detmold. | ||
| 3 Wing AAC Workshop | ||
| 1965.05 | Aden: Falaise Lines, Little Aden | From 653 Squadron AAC Workshop |
| Jun 65: Renamed 74 Aircraft Workshop | ||
| 1967.10 | Sharjah | |
| ?? | ||
| 75 Aircraft Workshop | ||
| 1965.10 | Malaya: Kluang | |
| ???? to 1967: Borneo: Brunei | 75 Aircraft Wksp MSRD | |
| ???? to 1966: Sarawak: Kuching | 75 Aircraft Wksp FRT | |
| 1970: Disbanded | ||
| 77 Telecommunications Workshop | ||
| ?? | Germany: Glamorgan Barracks, Duisburg | |
| 1960: Renamed 77 (Special) Telecommunications Workshop | ||
| 78 Aircraft Workshop | ||
| 1966 to 1967 | Sarawak: Kuching | |
| 87 Telecommunications Workshop | ||
| 1953 | Germany: Clifton Barracks, Minden | Formed by retitling 20 Electronic Workshop |
| 1957 | Germany: Kingsley Barracks, Minden | |
| 1958: Renamed 87 (Specialist) Telecommunications Workshop | ||
| 1961: Renamed 87 Telecommunications Workshop | ||
| 1967: Redesignated 20 Corps Electronics Workshop | ||
| 138 Static Workshop | ||
| c1948 | Austria: Klagenfurt | |
| 158 Brigade Workshop | ||
| 1945 | Germany: Witten Annen | |
| Jan 47: Retitled 5 Infantry Workshop | ||
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