Ciaran Martin is Professor of Practice in the Management of Public Organisations. Prior to joining the School, Ciaran was the founding Chief Executive of the National Cyber Security Centre, part of GCHQ. Ciaran led a fundamental shift in the UK’s approach to cyber security in the second half of the last decade. He successfully advocated for a wholesale change of approach towards a more interventionist posture and this was adopted by the Government in the 2015 National Security Strategy, leading to the creation of the NCSC in 2016 under his leadership. Over the same timeframe, the UK has moved from joint eighth to first in the International Telecommunications Union’s Global Cybersecurity Index and the NCSC model has been studied widely and adopted in countries like Canada and Australia. The NCSC’s approach has been lauded for responding quickly to incidents and giving the British public clear and prompt advice on responding to them, putting previously classified information in the hands of industry so that companies can defend themselves more effectively, and major improvements in automatic cyber security like countering brand spoofing and rapidly taking down malicious sites, and projecting the UK’s leadership in cyber security across the world. Ciaran’s work, which led to him being appointed CB in the 2020 New Year’s Honour’s list, has also been recognised and honoured in the United States and elsewhere across the world.