Capenhurst was a township in Shotwick Parish of the Wirral Hundred and included parts of the hamlets of Dunkirk and Two Mills.

The local amateur football team, Capenhurst Villa, play in the Carlsberg West Cheshire League.

The local Rugby Union team play in the HALBRO Division 3 West league and now has a thriving junior section.

Campbell claimed that the interception was conducted by the Government Communications Headquarters (GCHQ), initially from a temporary installation on the roof of the plant until commissioning of the tower in 1990.

The main route for phone calls between Ireland and the United Kingdom was via the submarine fibre optic cable UK-Ireland 1, landed at Holyhead, Anglesey, then transmitted by a microwave link.