The forces are definately one way in - depending on wot area you want to get into.
In Bizjets (like wot I have got...) then there's a lot of ex-RAF (Royal Squadron and Northolt) people around - most earning a good amount of money in Ops Mgt.
There's more money (I think I'm right in saying) in Corporate Ops rather than Airlines - though I'm not sure which is harder to get into, as I've only done this side.
Hope that helps - enjoy working for Her Maj.