Just a heads up really, it may do someone a favour but won't appeal to the masses!
Being a light mobile user (£10 a month simplicity tariff) I was looking to replace my ageing handset.
Both in the o2 store and on the phone (not online) they were offering a £10 per month, 24 month contract including a choice of quiet a few free handsets. Can't remember what, but they were basic camera phones. I think it was 75 minutes and 150 texts.
So if like me, you are a light user with short call durations, a few texts and only want a basic phone then it's a good deal.