If you haven't got it already, Jack Olsen's book on Project Aphrodite 'Desperate Mission' is essential reading (although it is written a bit like a movie suggesting much of the dialogue is made up):
http://www.amazon.co.uk/Aphrodite-De...1324128&sr=1-2
Funnily enough, whilst walking on heathland just outside Walberswick, Suffolk, aged about 7 in 1980, my father has told me that I had asked him 'why that rabbit hole had a metal door on it'. He pulled the piece of metal out of the ground and it was a twisted piece of aluminium that had clearly been in an explosion. We later looked at maps and the area was directly below where Kennedy's Liberator exploded. In 2006, my father went walking in the same area and saw another piece of aluminium sticking out of the ground. It was some sort of large finned air-cooled aluminium engine cylinder, so he gave it to Parham Air Museum.