MI5 – The Security Service

MI5 – The Security Service


MI5 safeguards the UK against threats to national security including terrorism, espionage, cyber attack and the spread of weapons of mass destruction. We also advise the Government and critical national infrastructure on the threat level and protective security measures, to help them reduce their vulnerability.


MI5 liaises with a wide range of organisations and government departments, both in the UK and overseas. We work collaboratively with the other intelligence agencies – the Secret Intelligence Service (SIS or MI6) and Government Communication Headquarters (GCHQ). The agencies have different but related functions, and the range of mutual assistance is wide. We also have links with over 100 foreign security and intelligence services, and work closely with them in countering transnational threats.

Whatever your experience, it’s likely we have something that suits your skills and abilities. You will find details of our vacancies and the skills we are looking for on our website www.mi5.gov.uk/careers


Because we have access to sensitive information pertaining to national security, candidates are required to obtain Developed Vetting, the highest form of security clearance.  All applicants must be over 18 years old, born or naturalised British citizens and normally have been resident in the UK for 9 out of the last 10 years. 


Discretion is vital. You should not discuss your application, other than with your partner or a close family member, providing that they are British. You should also make them aware of the importance of discretion. You should not post on social media sites about your application or discuss it with anyone else at this stage. You will receive further guidance during the recruitment process.


MI5 values diversity and is committed to reflecting both equal opportunities and the society we protect. Work-life balance is important to us at MI5 and we offer flexible working where operational commitments allow.


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