By Dave Taskis 
| 1998 - 44 HM.1 Merlin 2012 - 30 to be upgraded as HM.2 2014 - ex RAF HC.3 for the Royal Marine Commando, during retirement of Sea King HC.4/HC.6 fleet. 2015 - HC.3i interim variant awaiting for the HC.4 2016 - Mk.4 variant for the Royal Marines Commando (MLSP) 2018 - Mk.5 AEW variant Crowsnest |
Units | |
| Years | Units | bold : Current base of the Unit |
| 2015/ | 814 NAS  | RNAS Culdrose |
| 2014/18 | 829 NAS | RNAS Culdrose |
| 2013/ | 824 NAS | RNAS Culdrose |
| 2013/ | 820 NAS | RNAS Culdrose |
| 2004/14 | 829 NAS | RNAS Culdrose |
| 2003/13 | 820 NAS | RNAS Culdrose |
| 2001/14 | 814 NAS | RNAS Culdrose |
| 2000/13 | 824 NAS | RNAS Culdrose |
| 1998/01 | 700 NAS | RNAS Culdrose |
Platform | |
| Classes |
| CVS Invincible class |
| CVS Queen Elizabeth class |
| H Argus class |
| DDG Type 45 Daring class |
| DD Daring class |
| FF Type 26 class |
| FF Type 22 (Batch 3) Cornwall class |
| FF Type 23 Duke class |
| FS River (Batch 2) class |
| FS Modified River class |
| LH Ocean class |
| L Albion class |
| AO Tide class |
| AO Point class |
| AO Fort I class (1978) |
| AO Fort II class (1992) |
| AO Wave class |
