giffgaff costs you miles less than other mobile networks. They're an online SIM only business and their standard rates are less than half those charged by the big networks. They promise to always keep things simple and to always do their best to be fair.
giffgaff Donation Rates
Free SIM Activation
Terms and Conditions
GoRaise is only paid on free SIM activations. Only one SIM can be ordered per order and households may only order one SIM per month.Donations may only apply to the sale price and not include VAT, delivery and other such costs. Please do not use voucher codes from other websites as this may affect your donation.