This V1 was probably air launched given the lateness in the war March 1945 and its crash site in the fen near Somersham, Cambridgeshire.
I was in bed when we heard this weird sound totally different from the Merllins we were used to being surrounded by 3 Group aerodromes. My Father immediately said "That's a Doodlebug", we all went quiet and listened, fortunately the noise slowly diminished and we slowly relaxed. I think we heard it cut out and a final thump. However in its journey it must have over flown every house in the Isle of Ely!!!!
Next morning we learnt it exploded harmlessly in a field seven miles westish