I do remember the MoD releasing TV tracker footage from one or more of the ships in Falkland sound of events that took place on 21st May 1982. Some of the footage is quite common in programmes about the conflict and include....
A Dagger being hit by a SAM.
Two A-4's releasing bombs.
HMS Ardent on fire and sinking.
However there is one piece of footage originally shown on the footage broadcast on British TV News back then that I have not seen since, and that is of a SHAR shooting down an A-4 with a Sidewinder.
The camera crosshair was on the SHAR when there was a flash under one of the wings (port one if memory serves, it's over 26 years since I last saw the film), Sidewinder departs the aircraft and the tracker follows it across the sky until it explodes in the rear of what looked like a Skyhawk, the footage released didn't show the Skyhawk crashing into the sea.
As a guess I would say that footage was of Lt Morrell shooting down Capitan de Corbeta Philippi.
The BBC or ITV may still have it in their news archives somewhere.