This is defo worth a look, no point in me posting offers as they go after 24 hours : very very cheap sim only deals alot of them buy one get one free for the whole year, and phone accessories..

ok hehe example:
O2 SIM CARD - Buy one get one FREE
Order this card and get 600 off peak minutes on the O2 network.There is NO line rental at all. Your ONLY commitment for the next 12 months is to pay for any chargeable calls and itemised billing @ £1.77 pm. That's all there is to this limited stock sim card.@ £19.99 inc vat and delivery! hence 2 sims for £10 each!

LINk:
http://scancom.co.uk/gonin24hrs/gonein24hrs.htm?1

if u have gone fo rone, plz post for rest of us to see!
enjoy!