.UK is the second-level country-code top level domain (ccTLD) for the United Kingdom. Until 2014 it was only possible to register domains under the second-level domains .co.uk, .org.uk and .me.uk, however nowadays also registrations directly under .UK are possible.
There are no restrictions for the .UK TLD. Anyone can register one and they are served on a first-come basis.
To transfer an .UK domain to NordName, you will have to contact the current registrar of your domain and ask them to change the IPS-TAG on your domain to NORDNAME. This should be done after you have ordered the transfer from us.
You (the registrant contact) will also receive an email from us containing the instructions for the IPS-TAG change once you have ordered the transfer.