In which country of the United Kingdom is Goonhilly Satellite Earth Station?

Goonhilly Satellite Earth Station is a large radiocommunication site located on Goonhilly Downs near Helston on the Lizard peninsula in Cornwall, England. It was once the largest satellite earth station in the world, with more than 30 communication antennas and dishes in use. The site also links into undersea cable lines.

Its first dish, Antenna One (dubbed 'Arthur'), was built in 1962 to link with Telstar. It was the first open parabolic design and is 25.9 metres (85 feet) in diameter and weighs 1,118 tonnes. The site's largest dish, dubbed 'Merlin', has a diameter of 32 metres (105 feet). Other dishes include 'Guinevere', 'Tristan', and 'Isolde' after characters in Arthurian legend, much of which takes place in Cornwall.

On 12 September 2006, BT (formerly British Telecom) announced it would shut down satellite operations at Goonhilly in 2008, and move them to Madley Communications Centre in Herefordshire, making that centre BT's only earth station.

On 11 January 2011 it was announced that part of the site was to be sold to create a space science centre. This would involve upgrading some of the dishes to make them suitable for "deep space communication with spacecraft missions". A new company was formed to manage the operations, Goonhilly Earth Station Ltd. The company leased most of the antennas for at least three years with the option to buy the entire complex in the future. Goonhilly Earth Station Ltd. took ownership of the site in January 2014.