These July 2009 documents provide a full list of the fibre-optic cables GCHQ had access to at that point, including details of location, bandwidth and corporate partners: see the Süddeutsche Zeitung article Snowden-Leaks: How Vodafone-Subsidiary Cable & Wireless Aided GCHQ’s Spying Efforts, 25 November 2014.
This undated GCHQ document reporting on the activities of its installation at Bude in Cornwall, describes the infiltration of three German satellite comnunications providers, Stellar, Cetel and IABG. The document includes server details, network graphs, customer login details and the personal details of network engineers: see the Intercept article New Zealand Launched Mass Surveillance Project While Publicly Denying It, 15 September 2014.
For the past five months the European Parliament’s Committee on Civil Liberties, Justice and Home Affairs (LIBE) has been conducting an investigation into electronic mass surveillance of, and conducted by, EU member states. This inquiry, prompted directly by Edward Snowden’s revelations, held the first of its fifteen hearings on 5 September 2013 and is now making amendments to the draft report prepared by Inquiry rapporteur, MEP Claude Moraes.