I don't recall a range on the south east corner of Henlow (assuming we're looking east); the only one I remember was midway up the west side well north of the main hangar complex near some WW! style hangars which were not Belfast Truss type like the main ones. Looking at Flashearth they seem to have been demolished. Anyway the land in the background looks too hilly for that part of rural Bedfordshire so I still reckon it's Upavon.