<ul><li><a href=http://www.legislation.gov.uk/ukpga/2003/21/contents target=_blank>Communications Act(Communications Act 2003, last updated in December 2017, s. 88)</a></li><li><a href=https://www.ofcom.org.uk/phones-telecoms-and-internet/information-for-industry/telecoms-competition-regulation/narrowband-broadband-fixed/fixed-access-market-reviews-2014/statement target=_blank>Fixed access market reviews, Ofcom, 2014(Last updated in June 2014)</a></li></ul>