Thanks to all thus far for your suggestions.
The CWGC site was very useful - thanks cynicalint. I thought I knew his name - but he had a 'hidden' first name (thanks Jackonicko!), but as his surname was not very common a surname-only search pulled out few enough results to pick him out. I have therefore found this real full name, service number, squadron, date of death, final place of rest (Belgium unfortunately - in a not-round-the-corner sense), and so on. Already much more than I could have hoped for.
Now I have got something to go on.
Many thanks again.
Cheers,
Nacluv