henry - as a very small lad I often went with my father on business to Weston Zoyland (the firm was based at Merryfield) as well as Dunkeswell and Lulsgate.
One of my earliest memories was a compound stacked high with battered silver (and yellow band) painted aircraft parts. I wonder whether your colleague's Meatbox was amongst them?
Fortunately the T7s still flying from Chalgrove are actually 'Mark 7-and-a-half' models with the later F8-style fin and rudder. And they really look very smart in gloss black!
thawes - thanks very much for those photos. They are from an era when we still had a proper air force!