Could be what were known as the Eagle hangars at LHR or could be Stansted which was where Skyways were based. One of my early abiding memories was walking through the hangars at STN as a lad of about 8 or 9 was the smell of dope and oil - aah magic.
Another memory was at LHR after a days spotting with a mate and his uncle, filling up with petrol at the old filling station at Hatton cross and after a day of Darts and early jets was to hear the unmistakable sound of Merlins as a Skyways York came thundering past on finals for 27L - magic - pure magic
Norwich - I shall have a look at photobucket!