Originally Posted by escobar
Looks like i'll just be video recording the sim then

Ah well thanx for that
Even if it is illegal, then as Splatt says it is a completely unenforceable rule and as long as you are happy that there aren't any safety implications or anything like that then I'd say that you're safe to ignore it and record in flight (just don't tell the CAA).
Of course not every rule or law that has ever been written is (or should be) rigidly adhered to.