20 Regiment
| Dates | Locations & Titles | Minor Units - Remarks |
| . | . | . |
| . | 4th Air Formation Signals | . |
| 1944 | Italy: responsibile for the communications of the Balkan Air Force | . |
| 1946 | Palestine and Egypt | . |
| . | 1947: Reduced to 4th Independent Air Formation Signals Squadron stationed in Egypt | . |
| . | . | . |
| . | 4th Air Formation Signal Regiment | . |
| 1949.05.04 | Egypt: Reformed at Abyss, Canal Zone | . |
| 1955 | Cyprus: Akroteri, RHQ at RAF Nicosia | . |
| . | 1959: Renamed 20th Signal Regiment (Air Formation) | . |
| . | 16 Jul 62: Reduced to 261 Signal Squadron (Air Formation) | . |
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