Hi ixion,
Superb mate. You're right about my missing the bit of wordplay, it was the Biggles Ref, really clever that you incorporated the 4 compilers in the other clues but I'd never known that they collaberated as a team on certain crosswords. All my others 1,2,3,6 & the link are correct so I'm happy about that. Well done to peterm for a clean sweep of correct answers.