David M. in

David M.

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Chief Information Security Officer at Sellafield Ltd
📍 Greater London, England, United Kingdom

David is the Chief Information Security Officer at Sellafield Ltd, responsible for protecting the UKs most complex nuclear site. He has over 12 years of experience in UK government cyber security, holding senior roles at the Home Office and the Foreign and Commonwealth Office, and holds a Masters in Information Security.

He is an active contributor to the cybersecurity community, often promoting the work of colleagues, sharing valuable industry newsletters, and encouraging new talent to join the field. He appears to be passionate about knowledge-sharing and supporting others in the cyber landscape.

He recently represented his company as a judge in the prestigious Cyber Leaders Challenge, held in Londons iconic BT Tower.

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Experience
16 Years
Current Role
Chief Information Security Officer
Job Level
Leadership
Location
Greater London, England, United Kingdom
Personality Overview

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Priorities

Topics David cares about

Nuclear Infrastructure Security
As CISO for Sellafield Ltd, his primary focus is on securing critical national infrastructure within the nuclear decommissioning sector against complex cyber threats.
National Security
His career includes over a decade in the UK's civil service, including the Home Office and Foreign Office, shaping strategy to protect national interests.
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Career

Work history

1-2024
Chief Information Security Officer
Sellafield Ltd
3-2022 - 1-2024
Head of Cyber Security Operations
UK Home Office
2-2021 - 3-2022
Head of Cyber Strategy
UK Home Office
12-2018 - 2-2021
Chief Information Security Officer
Foreign and Commonwealth Office
11-2011 - 12-2018
Various
UK Civil Service
In the press

Media appearances

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Education

David has no verified education history

Social presence
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Behavioral profile

DISC profile (public)

DISC behavioral profile

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