SIS works secretly overseas to make the UK safer and more prosperous.

We obtain secret foreign intelligence to inform Government decisions. We disrupt terrorism and nuclear proliferation, and our intelligence helps to prevent and resolve conflict. We work with our overseas agents, contacts and partner Services to shape developments and project the UK's influence.

SIS is part of the UK's intelligence community and we work closely with the Government. The secrecy of our operations, and the identity of those who work with us, is our foremost principle. Equally, our work is overseen by Ministers and Parliament, and is subject to UK law.

We work within the ethical framework of a modern democracy; accountable to government and reflecting the values of British society.

SIS is a modern organisation with sophisticated technology and a diverse workforce - all dedicated to protecting the UK, and contributing to a more prosperous and peaceful world.