HMS Active was the fifth Type 21 frigate of the Royal Navy and entered service in June 1977. She was built by Vosper Thornycroft Shipbuilders. She was sold to Pakistan in 1993 and is still in service as the PNS Shah Jahan.
- 1976-1979 Cdr Anthony R H Rogers
- 1979-1980 Cdr Michael C Gordon-Lennox
- 1980-1981 Cdr Peter M Franklyn
- 1981-1982 Cdr Paul C B Canter
- 1983-1985 Cdr Anthony J C Morrow
- 1986-1988 Capt Ian D G Garnett F4
- 1988-1989 Capt Paul C B Canter F4
- 1990-1991 Capt Michael A Johnson F4
- 1991-1993 Capt Anthony J C Morrow F4
- 1993-1994 Capt Christopher R Beagley F4
Royal Navy Service
Active participated in the Falklands War, setting out from HMNB Devonport on 10 May 1982 as part of the Bristol Group, reaching the task force by 26 May. Active formed part of the main British Fleet, well east of the Falklands during the day, while escorting supply convoys to San Carlos Water or carrying out shore bombardment missions at night. On the night of 13/14 June, Active shelled on Argentine positions during the Battle of Mount Tumbledown. By the mid-1980s, in common with the other surviving Type 21s, Active suffered from hull cracking. When the ship was next refitted steel plating was welded along each side of the ship to repair and reinforce the weak points. At the same time modifications were made to reduce hull noise.