Royal Anglian Regiment
| Dates | Locations | Higher Formation/Remarks |
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| . | 3rd Battalion, Royal Anglian Regiment | . |
| 2006.04.01 | Formed from five of the six companies of the East of England Regiment | . |
| . | HQ at Bury St Edmunds | . |
| . | A (Norfolk & Suffolk) Company at Norwich and Lowestoft | . |
| . | B (Lincolnshire) Company at Lincoln and Grimsby | . |
| . | C (Leicestershire & Northamptonshire) Company at Leicester and Northampton | . |
| . | E (Essex & Hertfordshire) Company at Chelmsford and Hertford | . |
| . | HQ (Suffolk & Cambridgeshire) Company at Bury St Edmunds | . |
| 2013 | Battalion HQ at Bury St Edmunds | . |
| . | A (Norfolk & Suffolk) Company at Norwich and Lowestoft | . |
| . | B (Lincolnshire) Company at Lincoln and Grimsby, to be disbanded by Dec 2016. Detachment in Lincoln resubordinated to C Company | . |
| . | C (Leicestershire & Northamptonshire) Company at Leicester and Northampton. By Dec 2016 absorb Lincoln elements of B Company and Northampton det disbanded | . |
| . | E (Essex & Hertfordshire) Company at Chelmsford and Hertford | . |
| . | HQ (Suffolk & Cambridgeshire) Company at Bury St Edmunds | . |
| 201? | Reserve Light Role Infantry in 7 Infantry Brigade | 7 Infantry Brigade |
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| . | 5th (Volunteer) Battalion, The Royal Anglian Regiment | . |
| 1967.04.01 | Formed in TAVR II with HQ at Peterborough as successor to TA battalions of East Anglian Brigade: | . |
| . | HQ Company at Peterborough, successor to 4th/5th Bn The Northamptonshire Regt | . |
| . | 1st (Norfolk and Suffolk) Company at Lowestoft, moved later to Ipswich with detachment at Lowestoft, successor to 4th Bn The Royal Norfolk Regt and part of The Suffolk and Cambridgeshire Regt | . |
| . | 2nd (Duchess of Gloucester's Own Lincolnshire and Northamptonshire) Company at Lincoln, successor to 4th/6th Bn The Royal Lincolnshire Regt | . |
| . | 3rd (16th/44th Foot) Company at Chelmsford, successor to The Bedfordshire and Hertfordshire Regt and 4th/5th Bn The Essex Regt | . |
| . | 4th (Leicestershire) Company at Leicester, successor to 4th/5th Bn The Royal Leicestershire Regt | . |
| 1969.12.15 | 5th (Hertfordshire) Company formed at Hertford with detachment at Hemel Hempstead from disbanding The Bedfordshire and Hertfordshire Regt (T) | . |
| 1973.10.08 | Company subtitles changed: | . |
| . | 1 (Suffolk) Company - Ipswich with det at Lowestoft | . |
| . | 2 (Royal Lincolnshire) Company - Lincoln | . |
| . | 3 (Essex) Company - Chelmsford | . |
| . | 4 (Royal Leicestershire) Company - Leicester | . |
| . | 5 (Hertfordshire) Company - Hertford with det at Hemel Hempstead | . |
| 1978 | Companies reorganised: 2 Coy at Lincoln redesignated as B Company 7th Battalion; 4 Coy at Leicester amalgamated with B Coy, 7th Battalion, to form that battalion's HQ Company | . |
| . | 1 (Suffolk) Company - Ipswich with det at Lowestoft | . |
| . | 2 (Northamptonshire) Company at Wellingborough, Rushden and Corby, transfer and redesignation of C Coy 7th Battalion | . |
| . | 3 (Essex) Company - Chelmsford | . |
| . | 5 (Bedfordshire and Hertfordshire) Company, redesignated - Hertford with det at Hemel Hempstead | . |
| 1985 | Companies reorganised: 1 Coy at Lowestoft transferred as C Company 6th Battalion; new 1 (Essex) Company formed at Basildon and Braintree by expansion of Braintree platoon B Company 6th Battalion | . |
| 1988 | 5 Coy redesignated 4 Company | . |
| 1992.04.01 | Reorganised (completed Oct. 1992) in three rifle company establishment: 1 Coy and 3 Coy amalgamated to form B Company 6th Battalion; 2 Coy amalgamated with D Coy 7th Battalion to form that battalion's C Company; 4 Coy absorbed Dunstable elements B Company 6th Battalion and redesignated as B Company 7th Battalion | . |
| . | HQ Company at Peterborough | . |
| . | 1 (Bedford) Company at Bedford, redesignation of B Coy, 6th Bn | . |
| . | 2 (Cambridgeshire) Company at Cambridge with Pln at Wisbech, redesignation of D Coy, 6th Bn | . |
| . | 3 (Leicestershire and Derbyshire Yeomanry) Company at Loughborough with Pln at Melton Mowbray, redesignation of C (Leicestershire and Derbyshire Yeomanry) Coy, 7th Bn | . |
| 1996.04.01 | Renamed 158th (Royal Anglian) Transport Regiment, RLC (Volunteers) | . |
| . | re-roled with HQ at Peterborough; 2nd Coy transferred as D Company 6th Battalion | . |
| . | 200 (Peterborough) HQ Squadron at Peterborough, conversion of HQ Coy | . |
| . | 201 (Bedford) Squadron at Bedford, conversion of 1 Coy; formed det by 2006 at Peterborough | . |
| . | 202 (Ipswich) Squadron at Ipswich with detachment at Colchester, conversion and transfer of B Coy 6th Bn, The Royal Anglian Regt; consolidated by 2006 at Ipswich | . |
| . | 203 Squadron at Loughborough with detachment at Melton Mowbray, conversion of 3 Coy, and LDY lineage discontinued | . |
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| . | 6th (Volunteer) Battalion, The Royal Anglian Regiment | . |
| 1971.04.01 | formed in TAVR II with HQ at Bury St Edmunds from cadres of former TAVR III Higher Formation: | . |
| . | HQ Company at Bury St Edmunds | . |
| . | A (Royal Norfolk) Company at Dereham with Pln at Norwich, formed from cadre The Royal Norfolk Regt | . |
| . | B (Bedfordshire) Company at Bedford, formed from cadre The Bedfordshire and Hertfordshire Regt | . |
| . | C (Essex) Company at Braintree with det at Dunmow, formed from cadre The Essex Regt | . |
| . | D (Cambridgeshire) Company at Cambridge and Wisbech, formed from cadre The Suffolk and Cambridgeshire Regt | . |
| 1975.04.01 | C Coy broken up: Braintree elements to B Company and Haverhill elements to D Company as new platoons | . |
| 1985 | Companies reorganised: Braintree pln B Coy expanded to form 1 Company 5th Battalion; and: | . |
| . | HQ (Suffolk) Company at Bury St Edmunds, new subtitle | . |
| . | A (Royal Norfolk) Company, moved to Norwich with det at East Dereham | . |
| . | B (Bedfordshire) Company at Bedford (pln at Braintree); new pln formed at Dunstable | . |
| . | C (Suffolk) Company, formed at Ipswich and Lowestoft by redesignation of 1 Company 5th Battalion | . |
| . | D (Cambridgeshire) Company at Cambridge and Wisbech (pln at Haverhill) | . |
| . | E (Home Service Force) Company, formed at Bedford | . |
| . | F (Home Service Force) Company, formed at Norwich | . |
| 1992.04.01 | Reorganised (completed Oct. 1992) in three rifle company establishment: B Coy at Bedford and Dunstable transferred as 1 Company 5th Battalion, less Dunstable platoon which amalgamated with 4 Coy 5th Battalion to form B Company 7th Battalion; D Coy redesignated as 2 (Cambridgeshire) Company 5th Battalion | . |
| . | A (Royal Norfolk and Suffolk) Company at Norwich and Lowestoft, amalgamation of old A Coy and Lowestoft pln of C Coy | . |
| . | B (Suffolk and Essex) Company at Ipswich and Colchester, amalgamation of old C Coy, less Lowestoft platoon, and Colchester pln of 3 Coy 5th Battalion | . |
| . | C (Essex) Company at Brentwood and Braintree, amalgamation of 1 Coy and 3 Coy 5th Battalion, less Colchester pln; moved 22 May 1993 to Chelmsford | . |
| 1996.04.01 | B Coy converted as 202 (Ipswich) Squadron, 158 (Royal Anglian) Transport Regiment, Royal Logistic Corps; D (Cambridgeshire) Company reformed at Cambridge and Wisbech by transfer of 2 Coy 5th Battalion | . |
| 1999.07.01 | Amalgamated with 7th Battalion, The Royal Anglian Regiment, and 3rd (Volunteer) Battalion, The Worcestershire and Sherwood Foresters Regiment to form The East of England Regiment | . |
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| . | 7th (Volunteer) Battalion, The Royal Anglian Regiment | . |
| 1971.04.01 | Formed in TAVR II with HQ at Northampton from cadres of disbanded TAVR III regiments: | . |
| . | The Leicestershire and Derbyshire Yeomanry Squadron at Melton Mowbray with det at Ilkeston, formed from cadre The Leicestershire and Derbyshire Yeomanry | . |
| . | A (Royal Lincolnshire) Company at Scunthorpe with detachments at Gainsborough and Grimsby, formed from cadre The Royal Lincolnshire Regt (T) | . |
| . | B (Royal Leicestershire) Company at Leicester with det at Hinckley, formed from cadre The Royal Leicestershire Regt (T) | . |
| . | C (Northamptonshire) Company at Northampton, formed from cadre The Northamptonshire Regt (T) | . |
| . | D (Northamptonshire) Company at Wellingborough with det at Corby, formed from cadre The Northamptonshire Regt (T) | . |
| 1975.04.01 | Leicestershire and Derbyshire Yeomanry Sqn redesignated as Company; rebadged 31 Oct. 1975 as LDY (or as Royal Anglian Regiment?) | . |
| 1977 | Ilkeston detachment Leicestershire and Derbyshire Yeomanry Squadron expanded to form B Company, 3rd (Volunteer) Battalion, The Worcestershire and Sherwood Foresters Regiment | . |
| 1978.04.01 | HQ moved to Leicester, battalion reorganised to support BAOR; and companies reorganised: C Coy relocated at Wellingborough, Rushed and Corby and transferred as 2 Company 5th Battalion | . |
| . | HQ (Royal Leicestershire) Company at Leicester, formed by amalgamation of B Coy and 4 Coy 5th Battalion | . |
| . | The Leicestershire and Derbyshire Yeomanry Company at Melton Mowbray with det at Ilkeston with Hinckley det transferred from B Coy | . |
| . | A (Royal Lincolnshire) Company at Scunthorpe with detachments at Gainsborough and Grimsby | . |
| . | B (Lincolnshire) Company at Lincoln with pls at Gainsborough and Boston, formed by transfer of 2 Coy 5th Battalion and elements A Coy | . |
| . | D (Northamptonshire) Company moved to Northampton | . |
| 1982? | E (Home Service Force) Company formed at Leicester and Lincoln | . |
| 1988 | The Leicestershire and Derbyshire Yeomanry Coy redesignated as C (Leicestershire and Derbyshire Yeomanry) Company | . |
| 1989 | A Company consolidated at Scunthorpe and Grimsby and omitted subtitle | . |
| 1992.04.01 | Reorganised (completed Oct. 1992) into three rifle company establishment: C Coy transferred as 3 Company 5th Battalion ; E (HSF) Coy disbanded | . |
| . | HQ (Leicestershire) Company at Leicester | . |
| . | A (Royal Lincolnshire) Company at Lincoln with pls at Grimsby and Boston, amalgamation of old A Coy and B Coy, less some elements to form 147 Port and Reclamation Coy, REME | . |
| . | B (Bedfordshire and Hertfordshire) Company at Hertford with pln at Dunstable and Hemel Hempstead, amalgamation of 4 Company 5th Battalion and Dunstable pln B Company 6th Battalion | . |
| . | D (Northamptonshire) Company at Northampton with new pln at Wellingborough, absorbed 2 Coy 5th Battalion | . |
| 1999.07.01 | Amalgamated with 6th Battalion, The Royal Anglian Regiment, and 3rd (Volunteer) Battalion, The Worcestershire and Sherwood Foresters Regiment to form The East of England Regiment | . |
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