This Weekend Only on T Mobile
Found this on Hot Deals, Look like the 12 month sim only is Back
+ ONE flexible booster (see their website for choice)
If you choose internet its only 500mb not the 3gb they did before chrimbo.
It works out about £7.66 after vat instead of £15.32
They are open from 8 on saturday morning, queues right now, I couldnt get one! But I will try in am