A last revelation on the surveillance activities of British intelligence GCHQ confirms the existence of spy base tapping undersea cables in the Middle East. The secret structures of GCHQ are part of the surveillance programme codenamed CIRCUIT and also refers to an Overseas Processing Centre 1 (OPC-1), while another centre, OPC-2, has been planned, according to documents leaked by Edward Snowden. The Register has published information on a secret British spy base located at Seeb on the northern coast of Oman.”]
Source: http://securityaffairs.co/wordpress/25467/intelligence/british-intelligence-tap-undersea-cables.html