.ac.uk - academic (tertiary education, further education colleges and research establishments) and learned societies
.co.uk - general use (usually commercial)
.gov.uk - government (central and local)
.judiciary.uk - courts (to be introduced in the near future)[7]
.ltd.uk - limited companies
.me.uk - general use (usually personal)
.mod.uk - Ministry of Defence and HM Forces public sites
.net.uk - ISPs and network companies (unlike .net, use is restricted to these users)
.nhs.uk - National Health Service institutions
.nic.uk - network use only (Nominet UK)
.org.uk - general use (usually for non-profit organisations)
.parliament.uk - parliamentary use (only for the UK Parliament and the Scottish Parliament)
.plc.uk - public limited companies
.police.uk - police forces[8]
.sch.uk - Local Education Authorities, schools, primary and secondary education, community education
Individual institutions[edit]
.bl.uk and .british-library.uk - British Library
.jet.uk - Joint European Torus
.nls.uk - National Library of Scotland; it also held another domain .national-library-scotland.uk, which has now been deleted.
Inactive second-level domains[edit]
.icnet.uk - Cancer Research UK - now deleted.
.govt.uk - former government domain, now deleted and replaced by .gov.uk
.orgn.uk - former non-profit organizations domain, now deleted and replaced by .org.uk
.lea.uk - local education authorities; since fallen out of use.
.mil.uk - the Ministry of Defence have always used mod.uk for their external domain, but use mil.uk on their private network. mil.uk exists only as a CNAME (alias) for mod.uk in the .uk zone file. The url
http://mil.uk is accessible as CNAME of
http://mod.uk
.nel.uk - National Engineering Laboratory (now TÜV NEL) - now deleted.
