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 (via subsidiary Mercury Communications). The company split in marzo de 2010, with its international division demerging to form Cable & Wireless Communications. The remainder of the Cable & Wireless business became Cable & Wireless Worldwide and was acquired by Vodafone in 2012.