A great deal without the hassle/risk of cashback deals! Don't forget to go through Quidco.
LG U300 - 600 cross-network minutes, and 400 texts every month (as well as 50 video minutes, 50 photo messages and £5 of free downloads).
Was £45, now £22.50 + a free 128 MB Micro-SD Memory card - 18 month contract.
Quidco offers £80 cashback - so go through it! Brings the monthly cost down to just £18!!!
Plus (!) if you know anyone on "3" already then you can enter their number at the checkout phase to receive £30 off your monthly bill (they also receive £30). A way to make friends maybe?
I've been on 3 for about 6 months now and am pretty impressed. They have a fairly comprehensive 3G network...but even when you are out of range (as part of the 3G licences the mobile operators were only obligated to provide 90% coverage) they have a sharing agreement with Orange (used to be 02) meaning that you get 99% UK coverage. Calls are cheap, and you can also get free MSN messenger....bonus!