Psyko,
There lots of variations on the theme but assuming that you can't take a year off work to do an integrated course at somewhere like Oxford, you could do the modular route which is where you split the various part of the course and do them section by section. This is a brief outline of what you would need to do (assuming you want to eventually fly for an airline).
Finish your PPL.
Hour build (often done in the states) until you have around 150 hours.
Do your JAA ATPL written exams (expect about 3 or 4 months if you were doing it full time).
Complete your Commercial Pilots Licence course (you can combine this with a multi-engined rating or you can do that at a later date).
At this point you will have around 200 hours and you can then do a flying instructors course. It's a 30 hour course (about £5000 or under).
You can then start earning a living as a flying instructor, building up your hours to around 1000 is the norm before going for airline jobs.
At some point before you start to apply for some airline jobs you will need to do your Instrument Rating. Once you have got your CPL/IR you can then get a right hand seat in an airliner. When you have achieved 1500 hours including 500 hours multi-crew time you can then change your licence for an ATPL.
As I said there are lots of variations on the theme but feel free to ask any more questions.