Downed Messerschmitt 1940

[stafford]

My wife's last remaining uncle passed away recently, aged 93 years. Whilst searching through some of his old photographs, we came across some relating to the Second World War.
Edward Butler was serving with the R.A.S.C. and stationed in south England in 1940.
A note on the back of one of the photos refers to the plane being shot down over Canterbury in June 1940 and on another photo it refers to the location being Broome Park, Denton near Canterbury.
I would be interest to know the details of the shooting down (forced landing)
and the pilot of the Messerschmitt.
The note on the back of the photo of the pilot reads as follows:-
German pilot of plane age 20 taken at Broome Park Denton near Canterbury.
Was fetched down in a field near here. The man arrogant and kept saying that
they would be winning the war in two to three weeks time.
Does anyone know if the pilot was credited with shooting down any allied planes before
is forced landing?

Regards,
Cliff Jones