<ul><li><a href=http://www.legislation.gov.uk/ukpga/1990/42 target=_blank>Broadcasting Act 1990(last updated in April 2017, Sections 15 - 16)</a></li><li><a href=https://www.legislation.gov.uk/ukpga/2003/21/contents target=_blank>Communications Act 2003(Part 1)</a></li></ul>