There have been a few threads on this - do a search (if the search facility is working) because some people have broken this down in a lot of detail.
Basically, if you go for the "modular" route, pass everything in close to the minimum amount of time, and go to the cheapest school for each stage of your training (including going abroad for some of it) it'll set you back about £30k.
If money is tight, there are a few banks which offer career development loans which can help you. Again, do a search for it, because it's been discussed before - it's not something I know anything about, though.
Good luck,
FFF
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