Posted: Aug 15, 2017 6:43 pm
I would go with EE, they're the big player with the best coverage. Can't see a pay as you go sim though with more than 4GB for 15 quid.
https://shop.ee.co.uk/sim-only/pay-as-you-go-phones
https://shop.ee.co.uk/sim-only/pay-as-you-go-phones