Your letter arrived here whilst I was away last week.
I will try to get out my Rushmer file tomorrow to see what I can glean for you, but as I recall I was not able to put any name to the possible victor.
We certainly resolved the timings of his loss and that of Webster of 41 Squadron. From memory, and I forget which was which, but there were only two Spitfire losses with "missing" pilots that day, one in the morning and one in the afternoon - Webster and Rushmer.
I will dig out the file and get back to you.
Editor: 'Britain at War' Magazine