Bonjour.
Thank you Chris & Larry.
It seem's (I hope) that is the 600 Sqn. The squadron I look for did a Training mission with the 303 sqn. over Sutton Bridge the 30th august 1940.
see below, the diary of 303 sqn.
30th Aug. First operation. In the course of a training interception with six Blenheims in the afternoon 'B' Flight contacted with some 60 German bombers, 60 fighters and British fighters having a running battle near Hatfield. F/O Paszkiewicz brought down one Do17 (destroyed) while the rest of the fighters escorted the Blenheims safely back to Northolt.
In my previous question I have spoken about Aston Down, because all infos come from a diary of a Free French who was in 5 OTU Aston down.
Thank you again