Gareth Tennant is an experienced Intelligence, Surveillance, and Reconnaissance (ISR) consultant with a background rooted in 14 years of service with the Royal Marines. His career has spanned tactical, operational, and strategic levels, where he specialised in Information Exploitation, a field in which he is now considered one of the UK’s leading experts. Gareth’s military service saw him working across all branches of the UK Armed Forces and with international partners on various operations worldwide, with experience ranging from combat leadership to advanced intelligence operations.
Throughout his career, Gareth has been instrumental in developing training, tactics, and procedures for UK ISR capabilities, advising on projects such as the Royal Navy’s Information Superiority Policy and contributing to NATO doctrine on intelligence operations. His qualifications include an MSc in ISR Management, a BEng in Command, Control, and Communication Information Systems, and a Chartered Management Institute Level 8 Extended Diploma in Strategic Management and Leadership, among other distinctions.
Today, Gareth leads Decision Advantage, a consultancy focused on helping organisations navigate complex environments by enhancing their decision-making processes and optimising their use of information and intelligence. He works with governments, militaries, and businesses, integrating lessons from military operations into corporate strategy, particularly in the areas of cybersecurity, data exploitation, and decision-making. His expertise in managing information and data in high-pressure environments has made him a sought-after speaker, workshop leader, and advisor for senior executives, offering practical insights into leadership and strategy in today’s fast-paced, decentralised world.
Gareth’s ability to connect global security challenges with the complexities faced by modern businesses has earned him recognition as a compelling and insightful speaker. His presentations, drawing on vivid examples from his military career, resonate with audiences seeking to better understand the intricacies of leadership and decision-making in an increasingly connected and unpredictable landscape.