The . org.uk domain is a recognised domain name extension for charities and non-profit organisations registered in the United Kingdom. Originally, it was necessary to show documentation as proof of being a non-profit organization in order to register a . org.uk domain, but now the domain is available for anyone to buy.
 
Who can register: Anyone can register a .org.uk domain, but it was originally intended for charities and non-profit organizations. 
 
Domain name restrictions: Before registering a .org.uk domain, make sure it doesn't infringe on someone else's trademark or copyright. 
 
Domain name length: A .org.uk domain can be registered for one to 10 years. 
 
Domain name characters: A .org.uk domain name can only contain the following characters: a–z, 0–9, and hyphen (-). It can't have a hyphen as the first, last, third, or fourth character. It also can't be made up of only two letters. 
 
Domain name purpose: The domain name should be related to the activities of a non-profit or public service organization. This includes charities, political parties, community groups, educational councils, professional institutions, and trades unions. 
 
Domain name popularity: The .org.uk domain is popular with charities, such as the RSPCA and Oxfam.