got mine 10 years ago so things may have changed since

used to be able to go and get your medical and jump into a cab for a 5 day course with a test at the end of it, they did a combined class 1 and 2 over a two week period for about £1100 with a garanteed pass or no fee for the next test

if things are still like that then at least you have a ball park figure, might even be worth asking around some test cetnres to see if this sort of scheame still opperats