All domain names ending with “.UK” are registered through Nominet, the official registry for UK domain names. It’s important to note that Nominet has specific policies regarding Glue Records for domains: once a Glue Record is added for a domain, deletion is not allowed. Although updates to Glue Records are permitted, the removal of these records is restricted.

Should you need to explore options for the deletion of Glue Records, it is recommended to contact Nominet for further assistance. Communication with Nominet can be facilitated through either phone or email. When reaching out to them, it is essential to use the same email address that was used for the registration of your “.UK” domain.

To initiate contact or seek support, you have the option to reset your password on the Nominet UK website. Simply go to the “Login – Nominet UK” page, click on “Forgotten password?”, provide the email address associated with your domain registration, and follow the link sent to your email to reset your password. Once the password reset is complete, you can log in to your account and engage in a chat with Nominet for domain support.

Alternatively, you may contact Nominet by phone at +44 (0) 1865 332244 or +44 (0) 330 236 9480. For email communication, use the address support@nominet.uk. Further assistance and information can be obtained by visiting Nominet’s domain support website at https://www.nominet.uk/domain-support/.

It’s also worth understanding the various active, inactive, and rejected second-level domains under “.UK.” Active domains cater to specific purposes such as academia, commerce, government, and more. Inactive domains, which were once in use, include those for former government entities and non-profit organizations. Additionally, some proposed domains, like “.cym.uk” for Wales and “.scot.uk” for Scotland, were rejected by Nominet. This information provides insight into the diverse landscape of domain names within the “.UK” TLD.

The various “.UK” TLDs and their purposes are as follows:

Active
.ac.uk academic (tertiary education, further education colleges, research establishments (such as the British Antarctic Survey) and learned societies)
.bl.uk used solely for the British Library
.co.uk commercial entities and purposes (the most popular second-level domain for .uk, majority of .uk registrations are on .co.uk domain)
.gov.uk government (central, devolved and local)
.judiciary.uk judiciary of England and Wales
.ltd.uk limited companies
.me.uk personal names
.mod.uk armed forces and Ministry of Defence establishments and systems
.net.uk ISPs and network companies (unlike .net, use is restricted to these users)
.nhs.uk NHS organizations and trusts
.nic.uk network use only (reserved exclusively for Nominet UK)
.org.uk not-for-profit entities
.parliament.uk Parliament of the United Kingdom and the devolved national parliaments and assemblies
.plc.uk public limited companies
.police.uk police forces in the UK and law enforcement organizations.
.rct.uk used solely for the Royal Collection Trust
.royal.uk used solely for the royal family website
.sch.uk local education authorities, schools, primary and secondary education, community education
.ukaea.uk used solely for the United Kingdom Atomic Energy Authority
.co.uk, .ltd.uk, .me.uk, .net.uk, .nic.uk, .org.uk, .plc.uk and .sch.uk are managed by Nominet UK, and except for nic.uk, they are all available for registration by the public (though they all carry various degrees of restrictions). Other second-level domains are managed by various government agencies and are generally more strongly controlled.

Inactive
.govt.uk a former government domain, is now deleted and replaced by.gov.uk.
.orgn.uk a former non-profit organization domain, is now deleted and replaced by .org.uk.
.lea.uk local education authorities; since fallen out of use.
.mil.uk the Ministry of Defence has always used .mod.uk for their external domain, but use .mil.uk on their private network. .mil.uk exists only as a CNAME for .mod.uk in the .uk zone file.

Rejected
.cym.uk A second-level domain for Wales; it did not have the support of the Welsh Internet community, with a .cym domain being proposed, though later rejected. Top-level domains of .cymru and .wales have since been delegated to the root in 2014.
.scot.uk A second-level domain for Scotland; it was rejected by Nominet.[citation needed] A top-level domain of .scot was approved on 10 June 2014 and has been delegated to the root since 13 June 2014.
.sco.uk A second-level domain for Scotland.
.soc.uk proposed for Social and Society use.