Contact us

If you have information relating to immediate threats to the UK, such as terrorism, please pass this immediately to the Security Service.

If your information relates to an imminent threat to life or property, please contact the police on 999 or the police Anti-Terrorist Hotline on 0800 789 321.

If you are interested in applying for a career in SIS please visit our careers pages.

Members of the public who wish to contact SIS with a general enquiry may do so via PO Box 1300, London SE1 1BD.

If you have information that you think will be of interest to us;

Please visit our contact us form



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