When did 92 SQ change their codes from GR to QJ (sometime in mid-1940)?

[Larry Hickey]

Hello,

In working with a number of photos of 92 SQ crashes from the action over France on 23 May 1940, I'm trying to determine what SQ Code these aircraft would have been carrying on that date. The Spitfires of two 92 SQ pilots (Bushell & Gillies) shot down that day were burned out back beyond the squadron codes. We're creating color profile artwork of Roger Bushell's a/c that day for the massive EOE historical project, and need to know when the codes of 92 SQ changed from GR to QJ. I'm aware of the photo of Wright's GR*S, reputedly taken on 2.6.40, in Norman Franks' "Air Battle Over Dunkirk." However, other info about Wright's aircraft indicates that it might have been "QJ" after returning from an air battle over Dunkirk. Who can sort this out and provide an accurate date for the change over in the codes. I would welcome further photos from 92 SQ from that period to help sort this out.

Regards,