As a lad spotting in the early 70's we always walked around to the LGW hangars after munching our sarnies on the grass in front of the runway threshold, and first you had the BUA hangars (VC10 and 1-11) then you walked on further to Donaldson (707) and then to Lakers (707 and 1-11) or was it the other way round?
I think the Donaldson hangar became BEA Airtours? (not sure)
Ask nicely and they all let us clamber all over their planes (''but just don't touch anything lads'')
I don't know where Caledonian did their mx then (707 and 1-11) - PIK?
Dan Air was Lasham