Matt,
Try the search function on the website, you aren't the first or the last to ask (a factor that will limit responses)
Then go to
www.srg.caa.co.uk and download a free copy of LASOR's. That will tell you exactly everything you need to know.
In the most basic sense you have two chocies to get to a CPL, integrated or modular.
Integrated - You start on day 1 with nowt, you leave a year or so later with a cpl or a frozen atpl.
Modular - ppl, hours building, commercial level theory exams, cpl course and skills test. But in your own timescale.
Either way once you have a cpl you hours build a little more to 250 hours and then take an FI course.
Price wise fixed wing I can't help you (I'm rotary and it would cost about 70K in my world), but bet any local flying school can give you an idea. Think a fixed wing ppl is about 7k and integrated courses when I looked at them about 6 years ago were in the region of 55K
Good luck