Tesco Mobile(O2 I believe)
but I have an old Value Tariff SIM, dunno if that is still available, so, all my texts are 5p regardless of where they go (UK only) calls vary (I think)
Texting is mainly what I use it for
no complaints at all - can recommend actually - never had an issue with coverage in Manchester, Oldham, Morecambe or Lancaster (and their surrounds)
Asda's texts are 4p I noticed all UK calls 8p - I may get a SIM of theirs, 49p when you buy credit on it at the same time, dunno, they use Vodafone and I see from their coverage map that all is good on the reception front
plus they charge 20p per mb of data - is that cheap or what?
I can't use gprs or WAP on this Value tariff of Tesco's