Nominet have comprehensive information about domain disputes and complaints proceedures on their web site. Here is a link http://www.nominet.org.uk/disputes. (accurate as of September 2014).
The information there is comprehensive and covers complaints against Registrars, Web Site content, Nominet, Intellectual property rights and more.
If after reading the details there you wish to contact me about any of the Web Sites or Domains I administer please make initial contact via the 'Contact me' form on this site (see link on the left side of this page)'.
It would be helpful (though not essential) to provide a telephone number so I can talk to you personally about such matters.