free giff gaff sim 250mins+unlimited internet and txts +£5 on first topup .

as above you get all this for £10 topup a month you have to go through this link to get the extra £5 http://giffgaff.com/orders/affiliate/jpwilky copy and paste this link plus you get free calls and txts to other giffgaff users for 3months as long as you topup once every three months you have to have an unlocked or 02 mobile as giffgaff works on the 02 network