203 Squadron
| Dates | Location | Higher Formation - Notes |
| 3 Infantry Brigade Signal Squadron | ||
| ?? | Cyprus | 3 Infantry Brigade |
| 1 Sep 59: Renamed 203 Signal Squadron (Infantry Brigade Group) | ||
| 30 Sep 62: Disbanded? | ||
| 203 Signal Squadron | ||
| 1971.09.25 | England: Carter Barracks, Bulford | 3 Div HQ & Signal Regiment |
| 1971.10.22 | England: Horseshoe Barracks, Shoeburyness | 3 Infantry Brigade |
| 1972.02.18 | Northern Ireland: Kitchen Hill Factory, Lurgan | 3 Infantry Brigade |
| 1973: Renamed 3 Infantry Brigade HQ & Signal Squadron | ||
| 1976.01 | Northern Ireland: Mahon Road Camp, Portadown | 3 Infantry Brigade |
| 15 Sep 81: Disbanded | ||
| 3 Infantry Brigade HQ & Signal Squadron | ||
| 1988.07.01 | Northern Ireland: Drumadd Barracks, Armagh | Reformed: 3 Infantry Brigade |
| 1993.03.22 | Northern Ireland: Mahon Road Camp, Portadown | 3 Infantry Brigade |
| 1 Sep 04: Disbanded | ||
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