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Secret Intelligence Service (SIS)

SIS logo

Chief: John Scarlett
(2004 -)

Website:
www.sis.gov.uk
[External website]

Contact details
[External website]

The principal function of SIS, often known as MI6, is the collection of secret foreign intelligence on issues concerning Britain's vital interests in the fields of security, defence, serious crime, foreign and economic policies.

The work of SIS is undertaken in accordance with requirements and priorities that are established by the Joint Intelligence Committee and approved by Ministers. SIS uses human and technical sources to meet these requirements, as well as liaison with a wide range of foreign intelligence and security services.

The role of SIS is governed by the Intelligence Services Act 1994[External website], which placed SIS on a statutory basis for the first time. The Act formalised the Foreign Secretary's responsibility for the work of SIS. It defined the functions of the Service and the responsibility of its Chief as well as establishing oversight arrangements. The Act directs SIS to obtain and provide information relating to the acts and intentions of persons overseas:

The Act likewise directs SIS to perform other tasks, enabling the Service to conduct operations and to act clandestinely overseas in support of British Government objectives.

The Foreign Secretary is answerable to Parliament for the work of SIS.

SIS was established in 1909 as the Foreign Section of the Secret Service Bureau under the leadership of Naval Commander (later Captain Sir) Mansfield Cumming.

Picture of SIS headquarters at Vauxhall Cross

The Foreign Section was responsible for gathering intelligence overseas. It grew steadily and by 1920 had become a separate service increasingly referred to as SIS. Cumming signed himself 'C'. His successors have done so ever since.

The present Chief of SIS is John Scarlett, who took office in 2004. SIS is based at Vauxhall Cross in central London.

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