Tesco mobile sims are fairly good for pay&go, the 'extra tariff' seems there best offer.
10p calls, 5p texts, but you have to top up £15 a month.
http://www.tesco.com/mobilenetwork/s...age=tariffinfo
or if you ring 1 number regular, try the o2 offer, send a text with the word 'ONE' and the number you wish to ring (must be another o2 number) to 21300 and you get 500mins a month free to that number, and 300 free texts when u top up £10 a month, it says this offer only lasts 3 months, i took this offer when it first started 3months ago, now i got another sim card and did it again, so im gettin 6months
