Go overseas and take a 3 week PPL course. What you will save on the cost of doing it in the UK will pay for the flights and accom and then you will save yourself a year and can be getting on with the ATPL ground school.
As long as you are realistic that youy probably won't make Captain in an airline like BA, and accept that your options may be limited to the smaller carriers then it is entirely possible that you will get something. Also being prepared to go anywhere and fly anything that pays will help too. Some people on here seem set on flying for the big boys, but don't seem prepared to work for a smaller outfit flying t/p's or c/j's for example.
To fund it, if you have property you could re-mortgate, otherwise it is pretty much just a bank loan. You can get £25K pretty easily which if you choose the right schools can get you a fair chunk of your training paid for. You could put the rest on credit cards or take out another loan for the rest.
