BE CAREFUL WITH T-MOBILE!!
I was one of those in this thread recommending T-Mobile, however if you miss a payment they charge extortionate fees for missing. I've just had to pay £40 in charges for being 2 weeks late with one payment. Add this to the £70 Lloyds-TSB charge for the refused DDs and you can see why I'm pretty *** off.
Best wishes .. RewtDewd