Why integrated? There is no real advantage to a self-sponsored student unless they think they have a realistic chance of their first job being with British Airways (even Citiexpress accept modular graduates). The hours you already have (at least any logged, except the Jag and the Squirrel) will also count for more than they will with the integrated.
I admit I work for a modular school, but I am ex-Navy and would not dole out bad advice even to a crab
. At the very least talk to a school that doesn't have an expensive integrated course to try and justify. I got very bad advice on this line from a school that shall remain nameless when I looked for a course, that tried to sell me an integrated course I knew was wrong for me even before I knew the difference. I had 180 hours fixed-wing logged and an FAA PPL, yet they didn't even offer me a modular course. I went elsewhere.
Save £12,000 or more, and fly 60 more hours. It only takes about 2-4 weeks longer, all things being equal. You can also do a good bit toward the course with HM's subsidy, without leaving the force yet. Send me a PM for contact details of the RAF flying club I know just North of London.