Your icon for RAF Filton is bang on for the main apron and the group of two hangars with flight office in centre. All the other buildings appear to have been demolished. It is, after all, 54 years since I spent week-ends there.

I hope you can add a note to the effect that 501 (County of Gloucester) squadron R.Aux.A.F. was active there from 1946 to 1957 when it was stood down.

Plenty of details on Wikipedia