Hang on a sec,
I'm going Modular, you can PM me and I'll tell you all about it, it works for me but then I'm in my mid 30's with family etc.....
The absolute first thing you must obtain in a Class One Medical from the CAA at gatwick, if your dream is the ATPL,then without that you are going nowhere. That said at your age it should not be a problem.
Have you looked at the CTC scheme?????
FF