Just finished last week actually. Redo is pretty well spot on (as usual).
I'll borrow from your post if you don't mind Redo -
1. Do the CAA medical at Gatwick. (GBP 235)
2. Do an approved theory groundschool, best bet is distance learning. 2000 pounds or so. (see note)
3. Sit all 14 JAR ATPL exams. (GBP 700)
4. Complete training as required for the CPL (see note)
5. Pass the CPL skills test (GBP 575)
6. Min hours req'd to convert the IR, 15 hours. 10 hours can be done on a FNPT II sim. Other 5 hours to be in the a/c. Budget around GBP 3500
7. Pass a pre-licence test (known as a 170A)
8. Pass the IR skills test (GBP 575)
9. Go to Gatwick and get the lic. (GBP 176)
Couple of points to add -
1. I did the Bristol DL course but was not required to attend any of the brush up courses. Cost - 1000 pounds
2. You are required to complete a CPL flight test however the amount of training prior to the test is up to the FTO. This is very easy compared to the Oz CPL ride. I got away with two hours prior to the test.
3. The 170A can be part of the 5 hours in the a/c if you are up to speed in time.
The theory side took 5 months to complete, the flying was done in just over 2 weeks. Spend somewhere around 8,000 GBP and that was absolute minumum hours.