| WK009 | Watchkeeper | |
| WK016 | Watchkeeper | |
| WK020 | Watchkeeper | |
| WK021 | Watchkeeper | |
| WK022 | Watchkeeper | |
| WK023 | Watchkeeper | |
| WK025 | Watchkeeper | |
| WK026 | Watchkeeper | |
| WK033 | Watchkeeper | |
| WK034 | Watchkeeper | |
| WK035 | Watchkeeper | |
| WK037 | Watchkeeper | |
| WK038 | Watchkeeper | |
| WK040 | Watchkeeper | |
| WK001 | Watchkeeper | Ex 4X-USC, f/f 16/04/2008 |
| WK006 | Watchkeeper | Crashed 02/11/2015 at Boscombe Down |
| WK007 | Watchkeeper | |
| WK008 | Watchkeeper | |
| WK010 | Watchkeeper | |
| WK011 | Watchkeeper | |
| WK012 | Watchkeeper | |
| WK013 | Watchkeeper | |
| WK014 | Watchkeeper | |
| WK015 | Watchkeeper | |
| WK017 | Watchkeeper | |
| WK018 | Watchkeeper | |
| WK019 | Watchkeeper | |
| WK024 | Watchkeeper | |
| WK027 | Watchkeeper | |
| WK028 | Watchkeeper | |
| WK029 | Watchkeeper | |
| WK030 | Watchkeeper | |
| WK031 | Watchkeeper | w/o 16/10/2014 |
| WK032 | Watchkeeper | |
| WK036 | Watchkeeper | |
| WK039 | Watchkeeper | |
| WK042 | Watchkeeper | Crashed 03/02/2017 |
| WK046 | Watchkeeper | |
| WK041 | Watchkeeper | |
| WK043 | Watchkeeper | Crashed 24/03/2017 |
| WK049 | Watchkeeper | |
| WK050 | Watchkeeper | w/o Aberporth 13/6/18 |
| WK047 | Watchkeeper | |
| WK054 | Watchkeeper | |
| WK604 | WK060 | Watchkeeper | f/f 14/04/2010, de-registered 11/08/2022 |
| 54-DE-001452 | WK002 | Watchkeeper Mk.1 | |
| 54-DE-001606 | WK004 | Watchkeeper Mk.1 | |
| 54-DE-001607 | WK005 | Watchkeeper Mk.1 | Damaged 06/03/2014, returned to service, |
| 54-DE-001649 | WK003 | Watchkeeper Mk.1 | |