First deal so go easy.
So you get an LG KF600 touchscreen phone (worth £100 payg) plus 400 minutes and 500 texts for 18 months for £30 each month. Overall cashback is £450 plus £60 quidco.
I have never seen such a competitive 18 month contract with the same kind of phone. The drawback is that if you fail to send you claim back on time then you lose all the subsequent cashbacks-however you get 60 days rather than the standard 30 or even stingy 14 days that some other companies offer.
Total cost £540 Total cashback £510 (inc. quidco) plus £100 phone