Apparently the same British call a Type 21 Naval Vessel a 'Frigate' to which Pakistan Navy refer as a 'Destroyer'.
http://www.paknavy.gov.pk/destroyer.htm
Call what you like a Frigate remains a Frigate and not can't be a destroyer.
GB
It is not about what I would call it whatsoever. I would call it a Type 21 frigate (former Amazon class), a design related to Vosper Mk5 (Iran), Mk 7 (Libya) and Mk 11 (Brazil).
Again, for those that didn't get it the first time: ships get incorrectly referred to as destroyers (e.g. in popular press or blogs, but sometimes also on more official media) while they are in reality more correctly classified as destroyers escorts, which in naval parlance is the
equivalent of frigate. Go look it up in recent history i.e. WW2.
Destroyer escort - Wikipedia, the free encyclopedia For example: Buckley class USN Destroyer Escort = Captain Class RN Frigate
USN: In 1975 all Destroyer Escorts then in US commission were redesignated Frigates (FF) and the type name "DE" was discontinued by the US Navy. The Frigate class of ship is the modern version of the destroyer escort of earlier years. The purpose is essentially the same.
Destroyers OnLine Home Page
Australian navy used similar designations
"Type 12 River Class Destroyer Escort / Anti-Submarine frigates, Parramatta (III), YARRA, STUART and Derwent, were a modified version of the Royal Navy's Type '12' Whitby and Rothesay Class frigates"
Type 12 River Class Destroyer Escort / Anti-Submarine frigate