Why choose us?
Work with us and you will make more effective decisions, reduce risk and time to commercialisation, and navigate global regulatory complexity with ease.
Save time and reduce complexity
Increase speed to global markets
Gain proactive, practical insights to inform decisions and reduce risk
Plan ahead with clear upfront budgeting
Open doors to new market potential
Understand opportunities and gaps
Work with a responsive, experienced team
Reduce admin with end-to-end support


Our Vision
To help extraordinary projects enhance all our lives
Central to our industry and our clients’ success, we are the partner of choice for satellite spectrum access services worldwide, supporting pioneering endeavours that shape the future of space technology and our world.
Our core values
Our values guide our team, helping us work independently and be agile and responsive to your needs.
Tenacious
We’re ambitious and dependable, taking full ownership of our role. We’re committed to your success.
Resilient
We’re consistent and unshakable. We calmly navigate obstacles, even when the stakes are high.
Cooperative
We foster a spirit of teamwork with clients, peers, regulators, and each other to achieve collective success.
Conscientious
We handle matters with discretion and sensitivity. Confidentiality comes as standard.
Agile
We embrace change and challenge, remaining adaptable and flexible to swiftly respond to evolving needs.
How we do what we do
Reducing complexity, increasing success

Our in-house team of experts boldly navigates the regulatory complexities of satellite services, ensuring seamless access to international frequencies, orbital resources, and national markets worldwide. But it’s how we do it that makes us a better partner.
A culture of innovation and support
At our core lies a vibrant culture of innovation, problem-solving, and creativity. We dare to challenge conventions and push boundaries, fostering an environment where bold ideas thrive.
Global understanding and a client-centric approach
With a keen awareness of the global landscape, we navigate both regulatory and cultural nuances to comprehensively understand your position. Every engagement starts with an insightful conversation, ensuring our tailored solutions meet your unique needs.
Agile, cooperative, and invested
Embracing agility and cooperation, our team thrives on new challenges and opportunities. Our passion for our work drives us, we find it both fascinating and vital for the future of our world.
Proactive communication and engagement
We’re proactive in our advice and our actions. We lead the way when necessary and guide you through complexity. As things progress, we ensure you stay informed and up to date at all times.
Cooperation. Step by step.
A proven process that adapts to your needs

Our Team
Meet the people behind
the success
We take great pride in our reliable and proactive approach, ensuring that every project we handle is managed with the utmost discretion and professionalism.

Alexis Martin
Chief Executive Officer
As CEO, Alex leads the company’s position as the world’s largest commercial provider of satellite spectrum and exceptional bespoke consultancy services in spectrum regulation and market access. With a diverse skill set and a deep passion for space, he helps clients navigate the global landscape, develop strategic approaches, and overcome market entry barriers. Having started his career as a spectrum engineer in the early 2000s, Alex has been shaping regulatory, policy, and spectrum matters for over two decades.
Alexis holds a Master of Engineering in optics and electronics from the University of Montpellier, together with a Master of Science in Engineering in Information and Telecommunication Science and Technology from Telecom SudParis. He furthered his studies with a year of specialisation in satellite telecommunications systems at ISAE-SUPAERO in France and obtained a professional certificate in Corporate Finance – Mergers & Acquisitions from Sacred Heart University in Luxembourg.

Rachel Beattie
Chief Financial Officer Chief Operating Officer
In addition to her role as Chief Financial Officer, Rachel also serves as Chief Operating Officer, playing a central role in HR and Legal functions and contributing across a wide range of strategic initiatives and day-to-day operations.
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Rachel holds Fellowship status with the Association of
Chartered Certified Accountants (ACCA) and has a Bachelor of Science degree in Applied Accountancy, awarded by Oxford Brookes University. These qualifications were completed alongside working for Coutts, where she began her career.
Prior to joining River Advisers, Rachel held various senior financial management roles within the online and digital technology industries, most recently for SMP Partners Group, a corporate services organisation providing company management and other services to a wide range of international clients. Rachel recently completed the ISU’s Executive Space Course.

Dr Jennifer Stone
Chief Strategy Officer
Head of Spectrum Strategy and International Coordination
In addition to her duties as Chief Strategy Officer, Jennifer manages River Advisers' scholarship programmes to provide educational opportunities to Isle of Man students and leads the Spectrum Strategy and International Coordination practice.
Prior to joining River Advisers, Jennifer was a Japan Society for the Promotion of Science Postdoctoral Fellow at Nagoya University. Her area of expertise was astrophysical fluid dynamics and plasma physics, and she has published several papers on topics including the interstellar medium, star formation, and the solar dynamo. Jennifer was awarded her PhD in Astronomy from the University of Wisconsin–Madison. She also holds Masters degrees in Astronomy and Physics from the University of Wisconsin–Madison and is a graduate of the International Space University Space Studies Program. She graduated with an MPhys (1st Class Honours) in Astrophysics from the University of St Andrews. Jennifer is a Fellow of the Royal Astronomical Society and a Member of the Institute of Physics.

Matthew Evans
Head of Global Licensing and Market Access
Matthew is Head of Global Licensing and Market Access (GLMA) at River Advisers.
Matthew has 13 years of experience in worldwide licensing and regulatory affairs for next-generation satellite services and technologies.
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Matthew helps clients understand and navigate the complex regulatory landscape and develop market access strategies. Through regulator relations and engagement, Matthew's group helps secure national authorisations and regulatory compliance for local commercialisation and testing, enabling clients' services to reach global markets. GLMA forms a dedicated client vertical, alongside the ITU Spectrum Strategy and Coordination division.
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Previous to satellite, Matthew worked in the aviation sector on international regulatory matters.
Matthew holds a Bachelor of Laws (LL.B.) degree from the University of Manchester, UK, and Université Bourgogne Europe, France.
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Matthew has written articles and blogs for industry publications, covering key regulatory topics for emerging technologies.

Chris Stott
Founder and Chairman
Chris serves as the Chairman of the company. Chris cofounded River Advisers in 1998 with his father, Bryan. Over the following 20 years, he grew the company as its President and CEO and saw it become the largest commercial provider of satellite spectrum services in the global space industry. Chris is also the founder, Chair, and CEO of Lonestar Data Holdings Inc.
In 2000, Chris left his position as Director of International Commercialisation and Sales with Lockheed Martin Space Operations to become River Advisers, President. Prior to his work with Lockheed Martin, Chris was an executive with McDonnell Douglas and the Boeing Company, working in International Business Development on the Delta Launch Vehicle programme.


