Go to the London Gazette website
http://www.gazettes-online.co.uk/hom...geotype=London and click on Search the Archives under Historians, on the RHS of the page. It's not much:
DFC: This officer showed outstanding fighting ability and gallantry when, during two consecutive days in May 1940, whilst greatly outnumbered, he shot down three Heinkel 111's two Junkers 88's and one Messerschmitt 109.
Bar to DFC: This officer has led his flight in all its operations against the enemy with great skill and courage. In a week of almost continuous action he shot down at least four enemy aircraft bringing his total successes to twelve.
Enjoy!
Frank.