Mark Walker OBE CMMar

Inquirer
DISC Type : dc

Strategic Advisor-Submarine People and Culture at Royal Navy

Ryde, England, United Kingdom

Overview

Mark is the Director of the Navy Portfolio at Tetra Tech, leveraging 24 years of Royal Navy leadership, including command of a nuclear submarine. An Officer of the British Empire (OBE) and a Cranfield University MSc graduate, he specializes in translating complex defence strategy into executable, resilient programmes.

Mark is a Freeman of the City of London and focuses on integrating into new organisational cultures, emphasizing relationship-driven landscapes. He shows a keen interest in psychological safety, believing it is critical for enabling teams to make good decisions in high-consequence environments.

Interesting fact: He was awarded an Officer of the British Empire (OBE) in the 2022 New Year Honours list.

Personality Overview

Upfront

Judgemental

Demanding

They care equally about the product and its potential impact.  They can be nudged to make faster decisions by offering what they value. They focus on objectivity in a pitch and pay little attention to bells and whistles.

Topics They Care About

Military Career Transition
He has publicly reflected on the learning curve of moving from a structured military environment to a civilian career, highlighting the value of service-developed skills like leadership and resilience.
Organisational Culture
He speaks on adapting from the Royal Navy's rank-based structure to the more fluid, relationship-driven culture of civilian industry, finding the adjustment rewarding.
Maritime Defence Programmes
His entire career, both in the Royal Navy and now at Tetra Tech, is focused on delivering complex, high-risk programmes across the maritime and defence domains.

Media Appearances

Armed Forces Week 2025: Transitioning from the .... Featured in Tetra Tech Europe News

See Now

Work History

8-2025
Strategic Advisor-Submarine People and Culture at Royal Navy
1-2025
Director Navy Portfolio, and Project and Cost Management Lead (South) at Tetra Tech Europe
8-2024 - 1-2025
Career transition at Career Break
12-2023 - 8-2024
Deputy Assistant Chief of Staff (Submarines) at Royal Navy
6-2022 - 12-2023
Operations Head (Royal Navy Directorate of Strategy and Policy) at UK Ministry of Defence

Education

2021 - 2024
MSc Defence and Security (Leadership and Management) from Cranfield University
2004 - 2005
Military and Strategic Leadership from Britannia Royal Naval College

More Information

Social Presence :

Prographics :

Exp : 25 Location : Ryde, England, United Kingdom Job Level : Senior Designation : Strategic Advisor-Submarine People and Culture at Royal Navy
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Insights For Selling To Mark

During A Call Or A Meeting

DO's

  • Ask them questions confidently while doing discovery, don’t be apologetic
  • Refer to testimonials from others in similar positions
  • Tell them that you are there to help them create visible impact within their organization

DONT's

  • Avoid long winding pitches, stay objective
  • Avoid repeating yourself or making generalizations
  • Refrain from asking too many questions

When Cold Calling

When Writing An Email

While Negotiating & Closing

    The secret to closing fast with Mark is

  • Conviction in the product matters to them, followed by proof points and strong testimonials.
  • Will you ever get a clear answer from Mark

  • They may not be very forthcoming, but they will say no if needed.

Insights For Deal Planning

    How fast (or slow) will Mark move?

  • Their decision making speed is somewhere in the middle.
  • Can Mark take some risk or not?

  • They can take risks but after weighing up the pros and cons.

You And Mark

Personality Compatibility


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