The Ashchurch Vehicle depot and workshops were(are) at Tewkesbury...It's the largest military vehicle depot in Britain I believe and vehicles were distributed from there...
I had a friend who worked there in the late 70's.....Ian

email (option): ian@wright52.plus.com

And I have a friend who works there now ! He was on this forum but I think he's sold his M20 now and does Landrovers instead..

email (option): richardpurkiss@hotmail.com