In 2004, Mark Stokes began working with the London Metropolitan Police Department. Mark Stokes started as head of the Forensic Digital Evidence Unit at the Metropolitan Police Department, where he worked with a covert police unit. Then, in 2007, he became the head of the Digital, Cybercrime, and Communications Forensics Unit, overseeing a staff of 160 technology specialists. He developed working relationships with key leaders to establish guidance and policy in digital forensics and forensic science.
Among his accomplishments, Mr. Stokes developed and implemented a transformational operating model for digital forensics. Through collaboration with key leaders, he combined the traditional forensics organization with the digital forensic unit. Mr. Stokes also obtained approval to invest in and implement a new digital forensic infrastructure across London, enabling frontline police officers to produce 64 percent of forensic evidence casework previously handled by forensic specialists.
Today, Mr. Stokes is the CTO and director at Engineering & Forensic Services. In this role, he is an expert witness in digital forensics and telecommunications, conducts digital forensics research, handles complex caseloads, and serves as a consultant to lawyers.
Mr. Stokes also advises universities on digital forensic courses, processes, facilities, and standards, and serves as a guest lecturer. Some of his work includes designing and building a complex digital forensic training and partnering with the University of East London to create a chip lab for security testing and reverse engineering.
What is your typical day, and how do you make it productive?
My days are usually split between forensic consultancy, research, teaching, and supporting investigations. I begin early by reviewing priorities and emerging developments in digital forensics and cybersecurity. Productivity for me comes from structure, curiosity, and continuous learning. I focus on solving the most technically challenging problems first, particularly where there is a need to recover evidence others believe is unrecoverable.
How do you bring ideas to life?
Most ideas begin with a real-world problem. Throughout my forensic career, innovation often came from necessity, whether that was recovering data from damaged devices or developing new approaches to cell-site and Wi-Fi analysis. I bring ideas to life by combining research, experimentation, collaboration, and practical testing until the concept becomes operationally useful.
What’s one trend that excites you?
The convergence of silicon-level analysis, AI-assisted forensic workflows, and embedded systems research is incredibly exciting. We are moving into a period where investigators can recover and interpret evidence from devices once considered inaccessible. The future of digital forensics will increasingly depend on multidisciplinary expertise across hardware, software, and artificial intelligence.
What is one habit that helps you be productive?
I consistently dedicate time to learning and experimentation. Even after decades in the field, I still spend time testing techniques, studying new technologies, and challenging assumptions. Staying curious has been one of the most valuable habits throughout my career.
What advice would you give your younger self?
Do not be afraid to pursue unconventional ideas. Many of the techniques now widely used in digital forensics initially appeared too ambitious or impractical. Innovation often requires persistence before others recognise its value.
Tell us something you believe that almost nobody agrees with you on.
I believe the future of digital investigations will rely far more heavily on deep hardware knowledge than most people currently appreciate. Many still see digital forensics primarily as software analysis, but the real breakthroughs increasingly happen at the silicon and memory level.
What is the one thing you repeatedly do and recommend everyone else do?
Question assumptions. In forensic work, small, overlooked details can completely change the direction of an investigation. The ability to critically analyse information is invaluable in both technical and professional life.
When you feel overwhelmed or unfocused, what do you do?
I step back and focus on fundamentals. Breaking a problem into smaller components usually reveals a pathway forward. I also find teaching and mentoring useful because explaining complex ideas to others often clarifies thinking.
What is one strategy that has helped you grow your business or advance in your career?
Building credibility through expertise and integrity has been the most important strategy in my career. In digital forensics, trust is essential because investigations often involve highly sensitive or high-profile matters. Consistently delivering reliable results and sharing knowledge internationally helped establish long-term professional relationships and opportunities.
What is one failure in your career, how did you overcome it, and what lessons did you take away from it?
Early in my career, there were occasions where investigative technologies advanced faster than organisational processes. Some ideas took years to gain acceptance. I learned that technical innovation alone is not enough; communication, collaboration, and education are equally important for lasting impact.
What is one business idea you’re willing to give away to our readers?
A specialist forensic recovery service focused exclusively on damaged and encrypted IoT devices would become increasingly valuable. As connected devices expand into every aspect of life, there will be growing demand for expertise capable of recovering evidence from nontraditional hardware at the chip and memory level.
What is one piece of software that helps you be productive? How do you use it?
Python has been one of the most useful tools throughout my work. It allows rapid development of forensic scripts, automation of repetitive tasks, and experimentation with new analytical methods.
What is the best $100 you recently spent? What and why?
Specialist electronic components and tools for experimental data recovery work. Small investments in the right hardware often lead to breakthroughs in understanding device behaviour and recovery techniques.
Do you have a favorite book or podcast you’ve gotten a ton of value from and why?
I value technical research papers and engineering publications more than any single book because technology evolves so quickly. However, I have always appreciated works that combine engineering, problem-solving, and investigative thinking.
What’s a movie or series you recently enjoyed and why?
I enjoy documentaries and investigative series that explore technology, intelligence, and problem-solving because they often mirror the complexity and human dimensions of real forensic work.
Key learnings
- Innovation in digital forensics often begins with practical investigative problems.
- Deep technical knowledge combined with curiosity can unlock evidence others cannot recover.
- Long-term credibility is built through integrity, collaboration, and continuous learning.
- Future digital investigations will increasingly depend on hardware and silicon-level expertise.
- Questioning assumptions is essential for solving complex technical challenges.