Gareth, the blokes here have, in their own way, offered you priceless advice. They have also given you an insight to the benign humour of Service life. Read, absorb and prosper.
Something very important you need to ask yourself: how much do you want to fly? how much do you want to be part of a close knit team made up of hard hitting jokers like these? how much do you want responsibility for life or death decisions for you and people who depend on you, how much do you want hard work and how much do you want to be buggered about for seemingly no good reasons and contrary to what you personally want to do. This list is not exhaustive.
If you still feel totally committed after that self test, go to the recruiting office and fill the forms in. The school qualifications are the easy bit. The first hard bit is OASC. They will asses your potential to complete Officer and flying training. They will tell you the truth about what you are probably capable and incapable of.
So that’s it? No, it’s the beginning. Re-read para 2. For what it’s worth, good luck