Certain limited grounds. Any interception outside these procedures is a criminal offence.
Computers: Under the Data Protection Act 1984, which gives effect to a Council of Europe Convention, data users are required to register a description of the personal data they hold, the purposes for which they use it, the sources from which they obtain it and the categories of person to whom they may disclose it. They must also provide an address to which data subjects may write for access to the data. Individuals have the legal right to know about the data held on them and the right toask a court to have factually wrong or misleading data corrected or deleted. In addition they have the right to claim compensation for damages if the data are lost, inaccurate, or disclosed without authority.