Hi Gary,
If you go down the modular route, the cash you save will pay for most of a type rating. This may help job prospects if you are an older applicant - although it wont make you any friends on these forums!!
Also, you may want to just commit to a PPL to begin with as you may discover flying is not want you want to do all day every day.
If you're in London, you can do your ground school at London Met (I commuted in from West London). Choose ground school wisely, as my experience shows that if this part goes pair shaped some serious time delays can develop as often you are unable to re-sit exams for two months.
Cheers,
Biscuit