Westminster Dragoons
| Date | Unit | Higher Formation |
| . | . | . |
| . | . | . |
| . | 2nd County of London Yeomanry (Westminster Dragoons) | . |
| 1947.01.01 | Reconstituted in TA with HQ at Westminster | . |
| . | A Squadron in London | . |
| . | B Squadron in London | . |
| . | C Squadron in London | . |
| 1951.09.01 | Redesignated The Westminster Dragoons (2nd County of London Yeomanry) | . |
| 1961.05.01 | Amalgamated with R (Berkshire Yeomanry) Battery, 299 (Royal Buckinghamshire Yeomanry, Berkshire Yeomanry, and The Queen's Own Oxfordshire Hussars) Field Regiment RA, to form The Berkshire and Westminster Dragoons and converted to armoured cars | . |
| 1967.04.01 | Disbanded and concurrently reconstituted as HQ (Berkshire and Westminster Dragoons) Squadron, The Royal Yeomanry Regiment in TAVR III with HQ at Chelsea | . |
| 1969.04.01 | HQ (Berkshire and Westminster Dragoons) Squadron, The Royal Yeomanry Regiment at Chelsea (effectively the Westminster Dragoons Squadron re-formed when Berkshire element separated to form 94 (Berkshire Yeomanry) Squadron, 71 Signal Regiment, Royal Signals) | . |
| 1984 | Redesignated HQ (Westminster Dragoons) Squadron, The Royal Yeomanry (squadron belatedly redesignated and rebadged accordingly)ÃÂ | . |
| 1999.07.01 | Redesignated W (Westminster Dragoons) Squadron, The Royal Yeomanry at Chelsea; re-roled in Joint Nuclear, Biological and Chemical Regiment | . |
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