Geezers,
"Sept 1978 at Abingdon they had - WB586/A, WP901/B, WK589/C, WP805/D and WZ877/uncoded (but had preBiopsy been 'G')"
Thanks for that, that was in my time there 77 - 79, I'm still sure we had 6 airframes though, and a large number of "elderly" pilots to fly em !!!!!
Smudge