If you simply want to fly recreationally for now, the easy fix is the UK National Private Pilots Licence, or NPPL, with an SSEA (Simple Single Engined Aeroplanes) rating. Have a look at page 5 of this document
http://www.nationalprivatepilotslice...20REV%2011.pdf for the allowances. Basically all of your hours count, you just need to pass the tests.
UK FCL, the ICAO compliant licencing system is a mess much in need of sorting out right now, and the CAA is trying to - albeit slowly. In the meantime however, that will get you in the system, able to fly most light aeroplanes, and you can then work out an elegant route to higher licences as and when you need them in slower time.
My guess is that you'll need 5-10hrs training, plus groundschool to get you through the different aeroplane type, different civilian ways of doing some things, etc. But it should be quite painless and most flying schools can do it. I wouldn't worry about taxiing allowables, you comfortably exceed the minima anyhow, and just need to do enough civilian instruction to learn your way through the NST and GST.
G