With all due respect, why don't you just apply to the air force? I'm assuming you mean the RAF as you're London based? Why go through the financial taxation of gaining a fATPL if you're hoping to join the RAF where they will completely retrain you?
Further, if it is the RAF they have this wonderful thing called a careers website. The information there is based upon fact, whereas PPRuNe is a rumour network. If you are not satisfied with their website, go to a careers office...