This looks like a good deal to me. Haven't seen it posted yet, so it probably isn't!
T-Mobile have Sim only deal with 350 minutes and unlimited texts for only £15 a month.
Plus if you go through quidco or topcashback you get £35 but they only give it to you once you have been connected for 3 months.
Not as good as the o2 deal form e2save, but good for someone who wants to be on t-mobile.