Cable & Wireless plc was a British telecommunications company. In the mid-1980s, it became the first company in the UK to offer an alternative telephone service to British Telecom. The company later offered cable TV to its customers, but it sold its cable assets to NTL in 2000. It remained a significant player in the UK telecoms market and in certain overseas markets, especially in the former British colonies of the Caribbean, where it was formerly the monopoly incumbent. It was also the main supplier of communication in the British South Atlantic, including Saint Helena and the Falkland Islands. It was listed on the London Stock Exchange and was a constituent of the FTSE 100 Index.

Sure, a trading brand of Batelco, is a telecommunications company in the Isle of Man, Jersey, Guernsey, the Falkland Islands, St. Helena, Ascension Island, and the British Indian Ocean Territory. Sure is the largest tri-island mobile operator across the Channel Islands and Isle of Man.