Essex Regiment
| Dates | Locations | Higher Formation/Remarks |
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| . | 4th Battalion, The Essex Regiment | . |
| 1947.01.01 | Reconstituted in T.A. with HQ at Ilford as an Army Signal Regiment, and amalgamated with 2/4th Battalion | . |
| . | A Company at Becontree | . |
| . | B Company at Southminster | . |
| . | C Company at Epping | . |
| . | D Company at Manor Park | . |
| 1958.06.02 | Transferred to the corps of 3rd East Anglian Regiment (16th/44th Foot) | . |
| 1961? | Redesignated 4th/5th Battalion, The Essex Regiment to perpetuate 5th Battalion which had disbanded as 517 (5th Essex) LAA Regt, RA | . |
| 1964.09.01 | Transferred to the corps of The Royal Anglian Regiment | . |
| 1967.04.01 | Regiment disbanded and concurrently reconstituted as: | . |
| . | Part of 3rd (16th/44th Foot) Company, 5th (V) Battalion, The Royal Anglian Regiment, formed in TAVR II at Chelmsford [also perpetuating The Bedfordshire and Hertfordshire Regt] | . |
| . | The Essex Regiment (Territorial), formed in TAVR III with HQ at Ilford | . |
| . | A Company at Ilford | . |
| . | B Company at Ilford | . |
| 1969.01.01 | TAVR III unit reduced to cadre at Chelmsford as The Essex Regiment, sponsored by 5th (V) Bn, The Royal Anglian Regiment | . |
| 1971.04.01 | TAVR II company reorganised as two companies: | . |
| . | 3rd (16th/44th Foot) Company, 5th (V) Battalion, The Royal Anglian Regiment at Chelmsford | . |
| . | C (Essex) Company, 6th (V) Battalion, The Royal Anglian Regiment at Braintree (det at Dunmow), reconstituted from cadre | . |
| 1973.10.08 | 3rd Coy redesignated as 3rd (Essex) Company | . |
| 1975.04.01 | Braintree company disbanded (Braintree elements to B Coy, 6th Battalion; Haverhill elements to D Coy, 6th Battalion) | . |
| 1985 | Reorganised as two companies: | . |
| . | 1st (Essex) Company, 5th (V) Battalion, The Royal Anglian Regiment at Basildon (det Braintree), formed by expansion of B Company, 6th Battalion | . |
| . | 3rd (Essex) Company, 5th (V) Battalion, The Royal Anglian Regiment at Chelmsford | . |
| 1992.04.01 | Reorganised as two companies: | . |
| . | B (Suffolk and Essex) Company,6th (V) Battalion, The Royal Anglian Regiment formed at Ipswich and Colchester by amalgamation of C Coy 6th Battalion, less Lowestoft pln, and Colchester pln 3 Coy 5th Battalion | . |
| . | C (Essex) Company,6th (V) Battalion, The Royal Anglian Regiment, formed at Brentwood and Braintree by amalgamation of 1Coy and 3 Coy 5th Battalion, less Colchester pln; moved 22 May 1993 to Chelmsford | . |
| 1996.04.01 | B Coy re-roled as 202 (Ipswich) Squadron 158 Transport Regiment Royal Logistic Corps (losing Essex element?) | . |
| 1999.07.01 | The East of England Regiment formed by amalgamation of 6th (Volunteer) Battalion The Royal Anglian Regiment, 7th (Volunteer) Battalion The Royal Anglian Regiment and 3rd (Volunteer) Battalion The Worcestershire and Sherwood Foresters Regiment, HQ at Blenheim Camp, Bury St Edmunds | . |
| . | E (Essex and Hertfordshire) Company, The East of England Regiment, formed at Chelmsford and Hertford, formed by amalgamation of C (Essex) Coy 6th Bn, Royal Anglian Regiment (less Brentwood element), and B (Bedfordshire and Hertfordshire) Coy 7th Bn, Royal Anglian Regiment | . |
| 2006.04.01 | 3rd Battalion, The Royal Anglian Regiment formed from five of the six companies of the East of England Regiment | . |
| . | E (Essex and Hertfordshire) Company, 3rd Battalion, The Royal Anglian Regiment at Chelmsford with Pln at Hertford | . |
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