Shadey,
You must be doing alright to have £2000 disposable each month. There's no way I can afford that much. I was thinking of flying no more than 4 hours a month and then taking about 16 months to PPL. Then I'd hour build in the same way but at a slightly reduced cost, possibly saving up and doing some blocks of hour building abroad to save some cash. I know it'll take a long time to get to CPL and then a lot longer to get to an employable level, but it's the only way of doing it without selling my flat and losing the security of my current job. I'm also just doing it as I love flying and if I never get a career from it I can accept that.
Good luck with it all anyway.