Don't think they've done an airshow down there for years. I did say it was in the 80s!
However, I happen to come across this website whilst trying to find out the dates for RIAT this year.
Airshow Calendar
There's one here on 1st June that's usually pretty big. No getting out of working this one though. Going to be on car parking duties.

But H&S have stated we need floppy hats and sunglasses, so can at least look slightly cool whilst doing it!