Culio,
Glad things went well, press on if you still like the idea. Personally, getting the 'Best Job in the World' (RAF Fighter Pilot) is worth any amount of effort!
Don't be distracted by some of the people on this site, some haven't got the right to comment, and some are just a bit generally angry with 'stuff'. The vast majority of serving RAF folks would be behind you in your efforts!
It's still a great job, but with a lot of responsibility. Consequently, it's up to YOU to find out all you can, and make the best effort you can in any further interviews or applications.
There is great advice on the 'wannabes' site. But my advice would be 2 point:
1- Be Yourself and honest
2- Research
Best of luck Chap, hope you make it!
Advo