airbpmd80,
I think the blue top to the fuselage was added to a number of JP's at Finningley that were used for a solo aerobatic display which 6 FTS toured around the display circuit at the time.
I think the Red Bird on the fin was either a part of the display livery or was a squadron badge for the Low Level and Air Defence Training Squadron, which was the squadron that operated the JP within No.6 FTS.
As to who had the last JP in the RAF, not sure of it was Finningley or Church Fenton with the refresher flying mob, but I am sure it was one of them.
Shackman,
This was the Finningley based 6 FTS which from 1970 to 1992 provided all Nav, Eng, AEO, ALM and multi-pilot training, and not the real 6 FTS to which you allude............