My good lady has an iPhone 5 for sale. She used it for about 2 months for business, but prefers Android phones. It's practically brand new and had a cover and screen protector on from day one. You wouldn't know it's been used unless someone told you this. It's the black 32gb version and running the latest iOS (6.1.4.) It will include the original box, charger + USB cable and earphones ("used once to see what they're like".) The phone has been reset to factory defaults. I think it might be locked to Vodafone, but I will test with a different SIM to check.
She wants £450, but will consider offers. PM me if you're interested, any questions welcome.