If you wish to cancel a domain name you can do this using your Online Services account. You should only cancel a domain name if you are sure that you no longer need it.
Once a .UK domain name is cancelled it will be available immediately to be re-registered on a first-come, first-served basis by any applicant.
A number of third level domain name registrations such as .co.uk may also hold the rights of registration for the equivalent .uk domain name. If the .co.uk domain name that holds the rights is cancelled the rights of registration for the .uk will end and the .uk domain name will be available for registration.
Once scheduled for cancellation the domain name will be removed from the register on the day of cancellation at some point before midnight. At this point the domain name will be available for anyone to register.
Please contact your registrar to ensure any domain name services that are no longer required are also cancelled.