Why does it take so long (the CRB check)? If I get arrested, then the police can find out instantly if I've got a record (well, they do on "The Bill"). So how can it take many months??
And there can be additional rules. On an AEF I know, and I presume all, the following rules apply to the "gents":
1. If a pilot (adult) goes into the gents and there is a cadet in there, he (the adult) must do a quick 180 and leave immediately.
2. If the pilot is already in there and a cadet enters, the adult must also leave immediately.
Both can be difficult tasks for middle-aged men...................