Stuart Sivieri in

Stuart Sivieri

Observer · DISC type ci
Principle Information Security Lead at Southern Water
📍 London, England, United Kingdom

Professional overview including current role context, leadership scope, domain focus, and career trajectory to help you understand background relevance before outreach.

Key behavioral and communication insights including interaction style, decision-making tendencies, and motivation drivers to tailor messaging and personalize conversations.

Business priorities, areas of interest, and practical outreach recommendations that can improve conversion quality for this professional.

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Experience
29 Years
Current Role
Principle Information Security Lead
Job Level
Senior
Location
London, England, United Kingdom
Personality Overview

How Stuart shows up

Curious
Value Driven
Example Seeker

They can sound friendly and charming but can quickly change gears to become inquisitive and probing. They are likely to ask many questions and look heavily for supporting information. They are generally good communicators and can be hard to convince.

Priorities

Topics Stuart cares about

Strategic Priorities
Topic insights and context to help personalize outreach and discovery conversations.
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Career

Work history

5-2025
Principle Information Security Lead
Southern Water
3-2023 - 4-2025
Head of UK and International Incident Response
Grant Thornton UK LLP
7-2022 - 3-2023
Head of UK Incident Response
Grant Thornton UK LLP
11-2019 - 7-2022
Cyber Incident Response Lead
Grant Thornton UK LLP
2-2015 - 3-2020
Head of MoD Cyber Crime
UK Ministry of Defence
In the press

Media appearances

Media appearances and press coverage highlighting public visibility and thought leadership.
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Education
2014 - 2018
Cyber/Computer Forensics and Counterterrorism
De Montfort University
Social presence
in
Behavioral profile

DISC profile (public)

c

Calculativeness (C)

Calculativeness (C) reflects the degree to which a person is likely to be cautious, systematic and analytical. Those scoring high tend to emphasise quality and accuracy.

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