After an early career in the private sector, Fleming joined MI5. He became assistant director-general on MI5 in 2011. While a senior official at MI5, Fleming served as director for intelligence collection and led MI5’s preparations for the 2012 Olympics. In 2013 served as deputy director-general there. He replaced Robert Hannigan as Director of GCHQ in spring 2017.
- "MI5 veteran Jeremy Fleming named as new GCHQ head". News.sky.com. Retrieved 21 March 2017.
- Ewen MacAskill. "GCHQ appoints MI5's Jeremy Fleming as director | UK news". The Guardian. Retrieved 21 March 2017.
- Curtis, Joseph (20 March 2017). "Stepping out of the shadows: What we know about the career MI5 officer named as Britain's new chief spy". Daily Mail. Retrieved 21 October 2017.
- Kirchgaessner, Stephanie; Hopkins, Nick (30 July 2019). "Secret texts cast light on UK's early role in Trump-Russia inquiry". The Guardian. ISSN 0261-3077. Archived from the original on 30 July 2019. Retrieved 31 July 2019.
- Laura Hughes. "Senior MI5 veteran to become the new head of the British intelligence agency GCHQ". Telegraph.co.uk. Retrieved 21 March 2017.
- "GCHQ appoints 'career spy' Jeremy Fleming as director". Daily Express. 20 March 2017. Retrieved 21 October 2017.
- "Fending off cyber attacks as important as combatting terrorism, says new GCHQ chief". The Register. 9 October 2017. Retrieved 21 October 2017.
| Director of GCHQ
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