Edward Snowden papers unmask close technical cooperation and loose alliance between British, German, French, Spanish and Swedish spy agencies. […]
The bulk monitoring is carried out through direct taps into fibre optic cables and the development of covert relationships with telecommunications companies. A loose but growing eavesdropping alliance has allowed intelligence agencies from one country to cultivate ties with corporations from another to facilitate the trawling of the web, according to GCHQ documents leaked by the former US intelligence contractor Edward Snowden. […]
It is clear from the Snowden documents that GCHQ has become Europe’s intelligence hub in the internet age, and not just because of its success in creating a legally permissive environment for its operations. Britain’s location as the European gateway for many transatlantic cables, and its privileged relationship with the NSA has made GCHQ an essential partner for European agencies. The documents show British officials frequently lobbying the NSA on sharing of data with the Europeans and haggling over its security classification so it can be more widely disseminated. In the intelligence world, far more than it managed in diplomacy, Britain has made itself an indispensable bridge between America and Europe’s spies.
http://www.theguardian.com/uk-news/2013/nov/01/gchq-europe-spy-agencies-mass-surveillance-snowden