First TSR Question!! Affordable and good private 6th form colleges?

Hey Everyone

I am an 18 year old student in Ireland at the moment.
I did average in my Junior Certificate And average at my leaving Cert due in part to illness and a bigger part to arsing around :s-smilie:

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I'm now doing a post leaving Certificate course in Business studies, which could effectively give me the Equivalent of 4 Irish A's.

After this I would like to study A levels (Not fussy where so long as its well organised and affordable), English language, Law and Business studies.

Will the fact i haven't Sat GSCE's Sink my UCAS application when i apply to uni ? (London uni probably) even if i get the Needed A level results?

Can anyone recommend good affordable Places to study A levels, maybe possible ways to fund it.

And can anyone shed some light on the GSCE requirements for Uni if any? motivation and drive are not an issue now as I'm trying my best to get back on track.

Id love to Go the whole way from A levels - Uni- LPC - Training contract etc but finding out how to start on the best foot from the outside is my first obstacle.

Thanks Dan