Just found a deal on their website that looks good.

My teenage daughter wants an iphone.

Iphone6 16gb free
Vodafone 20GB plan with unlimted texts and mins
£46.50 a month
Including £89.99 automatic cash back.

Any better deals around. Cant get three here or at her school

Wow that is a good deal I would be surprised if you can find anything better than that.