iPhone 5c contract, as the very name suggests, are contract based deals that involve the users in an agreement of a particular tenure with the network services. The tenure of the agreement could be of 12, 18, 25 or 36 months as chosen by the customers and if they wish to use the same network service, they can further renew the contract.

http://www.christmasmobileoffers.co.uk/iphone-5c-16gb-deals.html

http://www.christmasmobileoffers.co.uk/iphone-5c-32gb-deals.html