Cable & Wireless opened an office in Jersey in 2004, offering corporate telecoms products.

and introduced fixed line products (SureDial Home & Business), as well as high speed mobile broadband utilising HSDPA.

Guernsey, together with Kingston-upon-Hull (see KCOM Group), was outside of the telecommunications monopoly which was created in the British Islands in 1912 by the General Post Office following its purchase of the National Telephone Company Limited.

Four months later on 30 September 2002, the company was rebranded as Cable and Wireless Guernsey, and following the expansion into Jersey and the Isle of Man, it was re-branded as Sure.

In April 2013, Sure was sold to the Bahrain telecommunications company, Batelco which then adopted the new Sure International brand for its business services.

[citation needed] In December 2020, it emerged that Sure Guernsey had, in 2018, provided the Israeli surveillance company Rayzone Group with access to the SS7 signaling system, thereby enabling it to track the location of any cellphone globally.

[2] In November 2024 Sure completed the Acquisition of Airtel-Vodafone Since 2002, Cable & Wireless has invested over £40 million in infrastructure, services and products in the Channel Islands and the Isle of Man.