If you wish to transfer a .UK domain name away that is registered via us to another company you will need to follow these steps:
Login your your client area here: https://secure.healthhosts.com and then goto > Domains > My Domains
On the My Domains page click the drop down arrow next to the domain you want to transfer away and select the Manage Domain option
Click on the Release Domain menu option and in the New Registrar Tag box type in the tag for the new registrar and then click the Release Domain button.
Important: Make sure you type the correct tag as when this has been released the domain will no longer be able to be managed by us.