Allegations surrounding National Security Agency (NSA) spying derived from fugitive whistleblower, Edward Snowden, and overshadowed last month's European Council summit.
At his post-summit press conference, Prime Minister David Cameron refused to be drawn on whether the UK Government Communications Headquarters (GCHQ) was spying on EU allies through its Tempora programme of internet surveillance, saying only that the agency operated within a proper legal framework.
He did emphasise that Britain shared its intelligence extensively with EU partners, and he echoed recent comments by MI5 director-general Andrew Parker condemning the way its efforts were being jeopardised by leaks.
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