If you're looking to get your hands on the stunning HTC One M8 with a monthly contract then pick one up at Phones 4U. You'll get an automatic £50 cashback plus a year's membership to Gourmet Society worth £69.95.
There are 4G tariffs ranging from £34.99 to £74.99 per month. The cashback will be automatically transferred to your account via BACS within 34 days. You can claim your Gourmet Society membership, giving you up to 50% discount at over 6,500 restaurants nationwide, once you have your phone.