| Navy | The Royal Navy |
| Type | Light cruiser |
| Class | Bellona |
| Pennant | 84 |
| Built by | Hawthorn Leslie & Co. (Hebburn-on-Tyne, U.K.) |
| Ordered | 4 Sep 1939 |
| Laid down | 15 Dec 1939 |
| Launched | 26 Aug 1942 |
| Commissioned | 6 Jan 1944 |
| End service | 1950 |
| History | Decommissioned in 1950. |
Commands listed for HMS Diadem (84)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | Capt. Eric George Anderson Clifford, RN | 15 Oct 1943 | 19 Apr 1945 |
| 2 | Capt. Arthur Macdonnell Knapp, RN | 19 Apr 1945 | mid 1946 |
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