Our GIFFGAFF Goody bag
Costs £7.50 a month each for both of us for 2 GB, texts and 200 minutes of talk. Easily covers our usage. 15 quid a month and neither of us notice any data speed issues out here in Wilts compared with our previous provider VF who were hitting us with £40 a month sim only. In fact, in over subscribed data environments, 20000 crowd at football which I regularly attend, VF never had coverage and GG over O2 still works.