Emsworth Museum
Mr & Mrs Mechta Senior help out in Emsworth Museum once a week. Both are Ex-RAE Farnborough and interested in aircraft (Mechta Senior was a flight test observer on the Comet 1 & Mrs Mechta Senior was an aerial photographer in Dakotas).
They told me the museum has a recording of a Hercules training captain who worked at Thorney Island, and the museum has put on exhibitions in the past about the various local airfields, so there should still be a fair amount of material there, although the theme does change quite regularly.