I have four three contracts and went to cancel them and got offered mad deals...to stay
Htc wildfire for £5.00 for unlimited texts, internet and 3 to 3 minutes and 250 mins
Htc Desire for £14.00 the same but with 300 minutes
Sony T715 same as htc wildfire but for a mad £3.00
also offered samsung portal for a fiver... all on 18 months contracts
so if you have three contracts up to renewal go for it as there are deals out there.
just swapped htc wildfire on 5.00 tariff for samsung wave for 60.00... bargain!