Question to the Ministry of Defence:

To ask the Secretary of State for Defence, which agreements between the United States and the United Kingdom govern the presence of US National Security Agency personnel in Britain.

The UK–US intelligence relationship is one of the closest in the world, built primarily on the longstanding UK-USA Agreement and our Five Eyes partnership, reinforced by our network of bilateral defence and security arrangements. Any details on US intelligence personnel are classified. It is government practice not to disclose any information regarding personnel working in intelligence roles to protect national security.