Have a look on the ukflying.com website. The chap who runs it is mil and the website is focused around getting us civi licences.
The information above is spot on but beware some schools are a little unsure of the rules and will try get you to to cross country qualification. This is not needed.
1. Do your exams (loads of apps on Apple and play store for around £10, pretty much word for word questions)
2. Ensure you have 10hrs P1 fixed wing
3. Do a skills test and you'll get a nice shiny PPL.
I did a few dual sorties just to get me back up and running from the fixed wing side of things.
2 dual flights, 5 hours of p1 hours building (I only had 5hrs solo from elementary), a skills test and licence application feeds cost me just shy of £1500.