The new RAF website no longer lists current operations, so any knowledge you can regurgitate during an interview will only evidence your internet search skills rather than a deep understanding of where the RAF is currently operating and it's role.
That is not what the interviewers are looking for. What they are interested in is what you know about the organisation you wish to join. You can get this from the resources they have provided eg online or hard copy. If you've done your research thoroughly it will be evident; if you try and wing it, you've wasted your time and theirs.
A cursory glance on the RAF website has given me information about current and future deployments, new equipment etc That's what you should reference during interview.
To be honest, the RAF is so teeny weeny these days, that it's hardly a difficult task to read and digest what it's all about.
But good luck anyway.