Designed to replace the Island class patrol vessels, the Castle class were longer, had better sea keeping and could allow helicopters up to Sea King size to land on. There was no hangar.
| 1979-oct-18 | Laid down | Laid down  P258 HMS Leeds Castle Yard No. 985 | |
| 1980-jun-25 | Laid down | Laid down P265 HMS Dumbarton Castle Yard No. 986 | |
| 1980-aug-20 | Launched | Launched P258 HMS Leeds Castle | |
| 1981-jun-03 | Launched | Launched P265 HMS Dumbarton Castle | |
| 1981-aug-27 | Commissioned | Commissioned P258 HMS Leeds Castle | |
| 1982-mar-12 | Commissioned | Commissioned P265 HMS Dumbarton Castle | |
| 1982-may-11 | Deployment | Deployment P265 HMS Dumbarton Castle Used initially as stores transport between Ascension Is and parts of the Task Force as it made its way to the South Atlantic. | |
| 1982-may-27 | Deployment | Deployment P258 HMS Leeds Castle Operation Corporate sent to South Georgia for temporary duty as Aviation Fuel Depot for helicopters involved in cross-decking stores. | |
| 1982-jun-06 | Deployment | Deployment P258 HMS Leeds Castle Deployed for 3 week duty as Ascension Is guardship, until 29 Jun | |
| 1982-jun-19 | Deployment | Deployment P265 HMS Dumbarton Castle entered Port William with stores, after ceasefire. | |
| 1982-jun-23 | Deployment | Deployment P265 HMS Dumbarton Castle entered South Georgia with stores, after ceasefire | |
| 1982-aug-13 | Deployment | Deployment P258 HMS Leeds Castle called at Gibraltar, en route to UK from South Georgia and Ascension Is, until 15 Aug. | |
| 2001-jan | Deployment | Deployment P258 HMS Leeds Castle deployed as Falkland Island Patrol Vessel until Jun 2004 | |
| 2002-may | Deployment | Deployment P265 HMS Dumbarton Castle Flagship for Mine Countermeasures Force (North) until May 2003. | |
| 2003-jun | Refit | Refit P265 HMS Dumbarton Castle Refit at Rosyth until Feb 2004, prior to South Atlantic deployment | |
| 2005-aug-08 | Decommissioned | Decommissioned P258 HMS Leeds Castle Planned sale to Pakistan failed. | |
| 2006 | Deployment | Deployment P265 HMS Dumbarton Castle Falkland Island Patrol Vessel during 2006 | |
| 2007-aug | Deployment | Deployment P265 HMS Dumbarton Castle relieved as Falkland Islands Guardship by HMS Clyde. | |
| 2008 | Decommissioned | Decommissioned P265 HMS Dumbarton Castle Planned sale to Pakistan failed. | |
| 2010-may | Refit | Refit P258 HMS Leeds Castle Towed from Portsmouth to A and P Tyneside, in preparation for sale to Bangladesh Navy as BNS Bijoy (F35). | |
| 2010-may | Refit | Refit P265 HMS Dumbarton Castle Towed from Portsmouth to A and P Tyneside, in preparation for sale to Bangladesh Navy as BNS Dhaleshwari (F36). | |
Aircraft