1998 - 44 HM.1 Merlin
2012 - 30 to be upgraded as HM.2
2014 -25 ex RAF HC.3/3A for the Royal Marine Commando, after retirement of Sea King HC.4/6
2015 - HC.3i interim variant awaiting for the HC.4
2016 - Mk4 variant for the Royal Marines Commando (MLSP)
2018 - AEW Mk5 Crowsnest Merlin
On June 2021 was revealed that the Merlin will continue to operate until 2040
All Merlin HC3 were upgraded by 2021 to HC4. Maritime Conversion programme consisted of a new digital cockpit, folding main rotor blades and folding tail, sprayed grey. Role is Commando support.
Units
| 2015- | 814 Squadron814 NAS |
| 2014-2018 | 829 Squadron829 NAS |
| 2013- | 824 Squadron824 NAS |
| 2013- | 820 Squadron820 NAS |
| 2004-2014 | 829 Squadron829 NAS |
| 2003-2013 | 820 Squadron820 NAS |
| 2001-2014 | 814 Squadron814 NAS |
| 2000-2013 | 824 Squadron824 NAS |
| 1998-2001 | 700 Squadron700 NAS |
Platforms