You need to be a quidco member. Once signed up find the merchant
You get £25 for signing up to any contact through this link.
But then you need to find the phone Nokia 1208. Where it states more gifts select Line rental discount.
You should now be able to select the T-Mobile combi 15 on a 18 month contract and this has a 18 months FREE by redemption. I know you have to pay the money to get the money back. But if you do not use more then 100mins and 100 texts a month and you receive the quidco cashback you are quids in.
I know the phone is not that great, but in the end you are getting 100mins and 100 text free each month after you claim it back also you get the £25 from quidco.http://www.quidco.com/
FIRST post, please be gental!