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.
Note: Please do not use this 'contact us' form to submit careers enquiries as we are unable to respond to careers enquiries submitted via this route. 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 read our important advice before you make contact.
Because of the secret nature of our work, SIS do not have a Press Office. And it’s our practice to never comment on operations, staff, agents, or relations with foreign intelligence services.
All media enquiries should be made through the FCO Press Office where we have a dedicated FCO Press Officer.