James,
How much do you anticipate it costing in total? If you have zero experience at the moment I'd plan to do your ppl, atpl theory, night rating and hour building whilst working. This means that you can do it at a reasonable pace without too large an effect on your life. The alternative is working all hours then stopping completely to work all hours on flying - neither being much fun.
Then look at a loan for the CPL ME IR course - assuming you don't go instructing first which again may be a good option for you.
There are government loans of up to £10k which may help.
https://www.gov.uk/career-development-loans/overview
I'm assuming that you rent and can't remortgage and don't know anyone who would lend you the money or guarantee a loan for you?