Baley,
Thanks for the reply...
If there is any chance of the photo being scanned, I am sure many of us would enjoy seeing it.
I had always assumed the site was part of the old RAF Ringway complex....however, I suggest "storage" would be more apt rather than training....can't see the population of Hale Barnes taking kindly to tanks rumbling down Hale Road really...
To be honest, having an aversion to death and the A538 as a very potential source of such at the time, I spent more time at the Airport hotel field, and used the footpath to the South side in preference.