40 Squadron |
| Unit Name | Location | Dates | Higher Formation | Notes |
| | | | |
| 40 Field Squadron | Wales: Cwrt-y-Gollen Camp, Crickhowell | Jan 50 - Nov 50 | 37 Army Engineer Regiment | 73 Sqn renumbered 40 Sqn |
| Germany: Roberts Barracks, Osnabruck | Nov 50 - Nov 55 | 37 Army Engineer Regiment | |
| Cyprus | Nov 55 - Nov 59 | 37 Field Engineer Regiment | Disbanded |
| 40 SME Squadron | England: Hoo, Chatham | Feb 60 - 61 | 12 SME Regiment | C Sqn 12 SME Regiment renamed 40 SME Sqn |
| England: Gordon Barracks, Gillingham | 1961 - Jul 62 | 12 SME Regiment | 18 and 40 RSME amalgamated to form 18/40 RSME Squadron |
| 40 RSME Squadron | England: Gordon Barracks, Gillingham | Jul 62 - Nov 65 | 12 RSME Regiment | |
| 40 RSME Squadron | England: Chattenden | Nov 69 - 73 | 12 RSME Regiment | Reformed 1969: Disbanded 1973 |
| 40 Plant Support Squadron | England: Chattenden | Aug 77 - 1982 | 12 RSME Regiment | Reformed |
| 40 Plant Support Squadron | England: Chattenden | 1982 - Dec 82 | 12 RSME Regiment | Disbanded when amalgamated with 18 RSME Sqn |
| | | | |
41 Squadron |
| Unit Name | Location | Dates | Higher Formation | Notes |
| | | | |
| 41 Field Park Squadron | Wales: Cwrt-y-Gollen Camp, Crickhowell | Jan 50 - Nov 50 | 37 Army Engineer Regiment | 74 Sqn renumbered 41 Sqn |
| Germany: Roberts Barracks, Osnabruck | Nov 50 - 1954 | 37 Army Engineer Regiment | 1952 became the Corps Field Park Squadron |
| Germany: Roberts Barracks, Osnabruck | 1954 - Oct 55 | 1 (BR) Corps | under local comd 37 Regt |
| Germany: Roberts Barracks, Osnabruck | Oct 55 - 1957 | 36 Corps Engineer Regiment | |
| 41 Army Field Park Squadron | Germany: Hameln? | 1957 - 1958 | 40 Advanced Engineer Stores Regiment | Disbanded |
| 41 Plant Park Squadron | Germany: Kitchener Barracks, Willich | Nov 58 - 1970 | 40 Advanced Engineer Stores Regiment | 339 Plant Pk Sqn re-titled 41 Plant Pk Sqn |
| 41 Army Support Squadron | Germany: Kitchener Barracks, Willich | 1970 - Jan 78 | 40 Army Support Regiment | Oct 1977 40 Army Support Regiment disbanded. Jan 1978 disbanded |
| | | | |
42 Squadron |
| Unit Name | Location | Dates | Higher Formation | Notes |
| | | | |
| 42 Engineer Squadron | Egypt: Canal Zone | Jan 50 - 1950 | 35 Army Engineer Regiment | Re titled 42 Fd Sqn |
| 42 Field Squadron | Egypt: Canal Zone | 1950 - Jan 54 | 35 Army Engineer Regiment | 1951 64 Sqn renumbered 42 Sqn |
| Cyprus | Jan 54 - Dec 55 | 35 Army Engineer Regiment | |
| England: Ripon | Dec 55 - Aug 56 | 35 Army Engineer Regiment | |
| England: Marchwood | Aug 56 - Nov 56 | | |
| Middle East: Port Said then Cyprus | Nov 56 - Jan 57 | 35 Army Engineer Regiment | ‘Op Musketeer’ (Suez Invasion) |
| England: Ripon | Jan 57 - Nov 57 | 35 Army Engineer Regiment | |
| Germany: Osnabruck | Nov 57 - Sept 64 | 35 Army Engineer Regiment | |
| Germany: Gordon Bks, Hameln | Sept 64 - Dec 77 | 35 Engineer Regiment | |
| Northern Ireland: Operation JOLE | Mar - Jun 1968 | | |
| Northern Ireland Tour: Long Kesh | 30 Apr - 5 Aug 71 | 21 Engineer Regiment | Infantry Role |
| Northern Ireland Tour: East Belfast | 29 Dec 72 - 30 Mar 73 | 35 Engineer Regiment | Infantry Role |
| Northern Ireland Tour: Ballykelly | 30 Oct 74 - 28 Feb 75 | | |
| Northern Ireland Tour: Ballykelly | 22 Oct 76 - 24 Feb 77 | | |
| Germany: Gordon Bks, Hameln | Dec 77 - Jan 81 | 4 Armd Div Engr Regt. | |
| Northern Ireland Tour: Armagh | 23 Jan to 27 Apr 78 | 4 Armd Div Engr Regt. | |
| Northern Ireland Tour: Ballykelly | 20 Mar - 21 Jul 81 | | |
| Germany: Gordon Bks, Hameln | Jan 81 - 1 Dec 99 | 35 Engineer Regiment | |
| Germany: Gordon Bks, Hameln | 1 Dec 99 - | 28 Engineer Regiment | |
| OP DESCANT | Oct 00 – Mar 01 | 28 Engineer Regiment | |
| Op CORAL (Congo) | Jun – July 03 | 28 Engineer Regiment | |
| OP TARROCK (Afghan) | May – July 04 | 28 Engineer Regiment | |
| OP DESCANT | Mar – Sept 05 | 28 Engineer Regiment | |
| 42 Field Squadron | Germany: Gordon Bks, Hameln | c2008 | 28 Engineer Regiment | |
| | | | |
43 Squadron |
| Unit Name | Location | Dates | Higher Formation | Notes |
| | | | |
| 43 Field Park Squadron | Kenya | Nov 48 - Jun 49 | 34 Army Engineer Regiment | Formed by renumbering 143 Fld Pk Sqn. 1949 disbanded |
| 43 Field Park Squadron | Germany: Hameln | Dec 50 - Nov 57 | 26 Field Engineer Regiment | Reformed |
| Germany: Hameln | Nov 57 - Apr 58 | 4 Div Engineers | |
| Germany: Hameln | Apr 58 - Oct 64 | 2 Div Engineers | |
| Germany: Roberts Bks, Osnabruck | Oct 64 - Jan 68 | 2 Div Engineers | under local command 25 Regt |
| 43 Field Support Squadron | Germany: Roberts Bks, Osnabruck | Jan 68 - Apr 69 | 2 Div Engineers | under local command 25 Regt |
| Germany: Roberts Bks, Osnabruck | Apr 69 - Sept 76 | 23 Engineer Regiment | |
| Northern Ireland Tour: East Belfast | 20 Mar - 24 Jul 72 | 23 Engineer Regiment | Infantry Role |
| Germany: Roberts Bks, Osnabruck | Sept 76 - Jan 81 | 2 Armd Div Engr Regt | |
| Northern Ireland: Ballykelly | 23 Jun to 25 Oct 77 | | |
| Northern Ireland Tour: Belfast (Monagh) | 2 Oct 79 - 2 Feb 80 | 2 Armd Div Engr Regt | Infantry Role |
| Germany: Roberts Bks, Osnabruck | Jan 81 - Jun 83 | 25 Engineer Regiment | |
| 43 Plant Squadron | Germany: Roberts Bks, Osnabruck | Jun 83 - 1992 | 25 Engineer Regiment | |
| Northern Ireland Tour: Maze Prison Guard Force | 19 Oct 90 - 21 Jan 91 | | |
| 43 Field Support Squadron | Northern Ireland: Antrim | 1992? - 2007 | 25 Engineer Regiment | |
| 43 Headquarters and Support Squadron | Waterbeach, near Cambridge | 2007- | 25 Engineer Regiment | |
| | | | |
44 Squadron |
| Unit Name | Location | Dates | Higher Formation | Notes |
| | | | |
| 44 Field Squadron | England: Perham Down | Nov 48 - Jan 50 | 32 Assault Engineer Regiment | Formed: Jan 1950 renumbered 59 Fld Sqn. |
| 44 Field Park Squadron | England: Devizes | Mar 50 - Jan 52 | 27 Field Engineer Regiment | Reformed |
| Germany: Minden | Jan 52 - Nov 57 | 27 Field Engineer Regiment | |
| Germany: Minden | Nov 57 - Jan 58 | 2 Div unit | |
| Germany: Alanbrooke Bks, Paderborn | Jan 58 - Jan 68 | 4 Div Engineers | |
| 44 Field Sup Squadron | Germany: Alanbrooke Bks, Paderborn | Jan 68 - Apr 69 | 4 Div Engineers | |
| Germany: Alanbrooke Bks, Paderborn | Apr 69 - Nov 70 | 26 Engineer Regiment | |
| Germany: Gordon Bks, Hameln | Nov 70 - Dec 77 | 35 Engineer Regiment | |
| Northern Ireland Tour: East Belfast | 29 Dec 72 - 30 Mar 73 | 35 Engineer Regiment | Infantry Role |
| Northern Ireland Tour: Londonderry | 8 July - 8 Nov 74 | 26 Engineer Regiment | Infantry Role |
| Germany: Gordon Bks, Hameln | Dec 77 - Jan 81 | 4 Armd Div Engr Regt. | |
| Northern Ireland | Jan to April 80 | | |
| Germany: Gordon Bks, Hameln | Jan 81 - 1994 | 35 Engineer Regiment | |
| 44 Headquarter Squadron | Germany: Gordon Bks, Hameln | 1994 - 1999 | 35 Engineer Regiment | |
| Germany: Barker Barracks, Paderborn | 1999 - | 35 Engineer Regiment | |
| | | | |
45 Squadron |
| Unit Name | Location | Dates | Higher Formation | Notes |
| | | | |
| 45 Field Park Squadron | Germany: | Mar 48 - 1948 | | Formed by re-titling 145 Fd Pk Coy. But almost immediately disbanded |
| Germany: Holzminden | Jul 49 - Oct 49 | 21 Field Engineer Regiment | |
| Germany: Hameln | Oct 49 - Nov 51 | 21 Field Engineer Regiment | |
| Germany: Assaye Barracks, Nienburg | Nov 51 - 1954 | 21 Field Engineer Regiment | |
| Germany: Assaye Barracks, Nienburg | 1954 - Jan 58 | | |
| Germany: Assaye Barracks, Nienburg | Jan 58 - Jul 60 | 5 Div Engineers | |
| Germany: Assaye Barracks, Nienburg | Jul 60 - Jan 68 | 1 Div Engineers | |
| 45 Field Sup Squadron | Germany: Assaye Barracks, Nienburg | Jan 68 - April 69 | 1 Div Engineers | |
| Germany: Assaye Barracks, Nienburg | Apr 69 - Apr 78 | 21 Engineer Regiment | |
| Northern Ireland Tour: Long Kesh | 30 Apr - 5 Aug 71 | 21 Engineer Regiment | Infantry role |
| Northern Ireland Tour: Long Kesh | 15 Dec 74 - 11 Apr 75 | 21 Engineer Regiment | Infantry role |
| Germany: Assaye Barracks, Neinburg | Apr 78 - Jan 81 | 1 Armd Div Engr Regiment | |
| Northern Ireland Tour: Maze Prison Guard Force | July - Nov 79 | | |
| Germany: Assaye Barracks, Neinburg | Jan 81 - Feb 96 | 21 Engineer Regiment | |
| Germany: Quebec Barracks, Osnabruck | Feb 96 - 1 Dec 99 | 21 Engineer Regiment | |
| Germany: Gordon Bks, Hameln | 1 Dec 99 - | 28 Engineer Regiment | |
| Op AGRICOLA | Feb 00 – Sept 00 | 28 Engineer Regiment | |
| Afghanistan - Op FINGAL | Jun 01 – Nov 01 | 28 Engineer Regiment | |
| Iraq - Op TELIC 5 | Dec 03 – Apr 04 | 28 Engineer Regiment | |
| | | | |
| 45 Field Support Squadron | Germany: Gordon Bks, Hameln | cAug 08 - | 28 Engineer Regiment | |
| | | | |
46 Squadron |
| Unit Name | Location | Dates | Higher Formation | Notes |
| | | | |
| 46 Field Park Squadron | England: Ripon | Dec 48 - Oct 49 | 24 Field Engineer Regiment | Formed |
| Hong Kong | Oct 49 - Jan 50 | 24 Field Engineer Regiment | re-titled 15 Fld Pk Sqn |
| 46 Field Park Squadron | England: Maidstone | Nov 50 - Nov 51 | 25 Field Engineer Regiment | Reformed |
| Cyprus | Nov 51 - Apr 52 | 25 Field Engineer Regiment | |
| Egypt: Canal Zone | Apr 52 - Jan 55 | 25 Field Engineer Regiment | |
| Egypt: Canal Zone | Jan 55 - Jan 57 | 25 Field Engineer Regiment | Indep unit |
| England: Maidstone | Jan 57 - Sept 58 | 25 Field Engineer Regiment | |
| England: Maidstone | Sept 58 - Dec 58 | 36 Corps Engineer Regiment | |
| Christmas Island | Dec 58 - Dec 59 | 36 Corps Engineer Regiment | |
| Belgium: Gheel | Dec 59 - Apr 60 | 40 Advanced Engineer Stores Regiment | 80 Wksp and Pk Sqn amalgamated with 46 Fld Pk Sqn to form 46 Wksp and Pk Sqn stationed at Geel. |
| 46 Workshop and Park Squadron | Belgium: Gheel | Apr 60 - Jan 68 | 40 Advanced Engineer Stores Regiment | |
| 46 Park Squadron | Germany: Sennelager | Jan 68 - 70 | ? | |
| 46 Army Support Squadron | Germany: Sennelager | 1970 - Jan 78 | | 1970 virtually disbanded since it was not manned, but stores and equipt held ready for mobilisation. Jan 1978 Formally disbanded |
| | | | |
47 Squadron |
| Unit Name | Location | Dates | Higher Formation | Notes |
| | | | |
| GHQ Survey Squadron | Egypt | 1950 - 1955 | | Formed by re-titling 525 GHQ Svy Sqn |
| Cyprus | 1955 - 1960 | | |
| HQ Survey Squadron | Cyprus | 1960 - Jun 63 | | Disbanded |
| 47 Cartography Squadron | England: A Camp, Barton Stacey | 1963 - Jun 72 | 42 Survey Engineer Regiment | Formed 1963: 1972 Amalgamated with 22 Litho to form 22 Map Production Sqn |
| | | | |
48 Squadron |
| Unit Name | Location | Dates | Higher Formation | Notes |
| | | | |
| 48 Field Squadron | Germany: Hameln | Dec 50 - Nov 51 | | Formed |
| Germany: Nienburg | Nov 51 - Oct 57 | 21 Field Engineer Regiment | Disbanded |
| Germany | Nov 57 - Jan 58 | 38 Corps Engineer Regiment | Reformed from 62 Fld Sqn |
| Christmas Island | Jan 58 - 1958 | 38 Corps Engineer Regiment | Disbanded |
| England: Ripon | Feb 59 - 1963 | 38 Corps Engineer Regiment | Formed by re-titling 61 Fld Sqn |
| Aden | Oct 63 - Apr 64 | 38 Corps Engineer Regiment | |
| England: Ripon | Apr 64 - Jun 77 | 38 Engineer Regiment | |
| Aden | Apr 66 - Mar 67 | | |
| Anguila: Op Sheepskin | Mar to Sept 70 | | |
| Northern Ireland Tour: Long Kesh | 29 Jun - 29 Nov 71 | | Camp Construction |
| Northern Ireland Tour: Castledillon | 13 Feb - 14 Jun 73 | | |
| Sharjah: Op Tenable | Mar to July 74 | | Sqn HQ and one troop |
| England: Waterbeach | Jun 77 - Jan 83 | 39 Engineer Regiment | |
| Northern Ireland Tour: Castledillon | 11 Oct 77 - 9 Feb 78 | | |
| Northern Ireland Tour: Castledillon | 21 July - 6 Dec 81 | | |
| 48 Field Squadron (Construction) | England: Waterbeach | Jan 83 - | 39 Engineer Regiment | |
| 48 Field Squadron (Air Support) | England: Waterbeach | c1990's - c2006 | 39 Engineer Regiment | |
| | | | |
49 Squadron |
| Unit Name | Location | Dates | Higher Formation | Notes |
| | | | |
| 49 Railway Training Squadron | England: Longmoor Camp | 1947 - Sept 48 | 5 Railway Training Regiment | Formed |
| England: Longmoor Camp | Sept 48 - 1961 | 16 Railway Training Regiment | Amalgamated with Rly (Depot) Squadron to form 49 Rly Depot Squadron. |
| 49 Railway Depot Squadron | England: Longmoor Camp | 1961 - 1964 | 16 Railway Training Regiment | |
| 49 Railway Training Squadron | England: Longmoor Camp | 1964 - Jul 65 | 16 Railway Training Regiment | Disbanded. Railway duties taken over by RCT |
| 49 Bomb Disposal Squadron | England: Chattenden | 1966 - Dec 69 | Bomb Disposal Unit | Formed |
| 49 EOD Sqn | England: Chattenden | Dec 69 - May 73 | Explosive Ordnance Disposal Unit | |
| England: Chattenden | May 73 - | 33 Engineer Regiment (EOD) | |
| Persian Gulf: Gulf War | Oct 90 - Mar 91 | | |
| Bosnia: Gornji Vakuf - Op Resolute | 15 Jan - 7 Aug 96 | | |
| 49 Field Squadron (EOD) | England: Carver Barracks, Wimbish | c2008 | 33 Engineer Regiment (EOD) | |