It DEPENDS WHAT YOUR QUALIFICATIONS ARE, EG IF YOU HAVE 1500 HOURS ON EQUIPMENT OVER 30T,pic,ALL YOU HAVE TO DO IS AIRLAW HUMAN FACTORS AND RT, A check ride with a CAA inspector on the jump seat observing your skills test.This route only gives you a UK ATPL,the Full JAR is an assessment of your hours in your Log book, equipment flown.
Oxford would be good but expensive,remember they do the Airline sponsorship
route,with the Private chap like you, coming and going,Last i heard big money.