Meet the Team

At Cenerva, we have a group of highly-skilled and experienced individuals who are dedicated to working with our clients to improve their knowledge and experience.

Our consultants and trainers are amongst the world’s leading experts in ITC regulation and policy and continue to train, write and consult worldwide.

Below you can read a brief profile of each of our team members.

Prof H Sama Nwana
Prof H Sama NwanaFounding Partner & Principal Consultant
Prof. Nwana, known as H, is a founding partner of Cenerva, and a former Ofcom Group Director. His experience in TMT regulation and sector re-design spans both the UK and emerging markets, and he has supported global players such as Google and Facebook. As the current Executive Director Emeritus of the Dynamic Spectrum Alliance, Prof Nwana is a global expert on spectrum, digital switchover and wireless technologies.
James Wild
James WildFounding Partner & Principal Consultant
James is a founding partner of Cenerva and an acknowledged global expert on number portability. With 25 years’ experience across a variety of senior telecoms roles and consultancy assignments in over 30 countries, James brings extensive international experience to Cenerva.
Andrew Gorton
Andrew GortonPartner and Principal Consultant
Andrew is a Partner with Cenerva .
Andrew has spent over 20 years working in the private and public sectors on ICT regulation. This includes several years consulting for Cenerva. He worked previously as the Group Head of Regulatory Affairs for Digicel in highly competitive and challenging circumstances as a new entrant operator in multiple telecommunications markets. Digicel launched and operated mobile, WiMax, cable, submarine cable and broadcasting networks in around 30 countries. He has also worked for Vodafone and the UK telecommunications regulator.
Chris Taylor
Chris TaylorPartner and Principal Consultant
Chris is a specialist in communications sector regulation, competition policy, and public policy. As the former Director of Consumer Policy at Ofcom and Director of Regulatory Affairs for Cable & Wireless International, Chris brings extensive international regulatory experience to the Cenerva team.
Peter Seymour
Peter SeymourPartner and Principal Consultant
Peter is an ICT and Payments expert and former Head of Government and Public Sector at the UK’s Payments Clearing House. Peter provides Cenerva with expertise and commercial breadth across ICT, procurement, payments and mobile money, switching and portability, and public affairs.
Iain Williams
Iain WilliamsNon Executive Director & Strategy Consultant
Iain is Non Executive Director of Cenerva. As the former CEO of Airtel-Vodafone in the Channel Islands, and after a career managing telecom operations for Millicom across Africa and Asia, Iain provides strategy support for Cenerva and its clients.
Dr Charles Jenne
Dr Charles JenneCenerva Trainer
Is a highly experienced international policy and regulatory specialist in the telecoms, energy and utility sectors. He was a senior Director in the Ofcom Spectrum Group, and part of the Ofcom leadership team, for 12 years until end 2018. He has been closely involved in all of the key spectrum policy developments for the UK mobile sector over this time, leading several of the most high profile projects as the sector has transitioned from 2G towards 5G including mobile liberalisation, spectrum trading, auction design, spectrum fees and mobile coverage policy. He has also been a key figure in the development of UK spectrum strategy, leading the most recent Spectrum Management Strategy review in 2014. He also managed Ofcom teams dealing with satellite policy and spectrum licensing. He was previously a partner in PwC’s Consulting practice where he was a leading regulatory expert setting up and operating regulatory frameworks in the energy and utility sectors for public and private sector clients in the UK, Europe, US, Africa and Asia.
Prof William Webb
Prof William WebbCenerva Trainer
CEO of the Weightless SIG, the standards body developing a new global M2M technology. He is a Director at Webb Search, an independent consultancy, and President-Elect of the IET. He was one of the founding directors of Neul, a company developing machine-to-machine technologies and networks, which was formed at the start of 2011. Prior to this William was a Director at Ofcom where he managed a team providing technical advice and performing research across all areas of Ofcom’s regulatory remit. He also led some of the major reviews conducted by Ofcom including the Spectrum Framework Review, the development of Spectrum Usage Rights and most recently cognitive or white space policy.
Dr Martha Suarez
Dr Martha SuarezCenerva Trainer
Dr Martha Suarez is President of the Dynamic Spectrum Alliance and has over 15 years of experience in the telecommunications industry. She spent over three years as General Director of the National Spectrum Agency in Colombia, where she was responsible for promoting the efficient use of spectrum having originally joined the ANE in 2013. Suarez is an electronics engineer, with a master degree in high frequency communication systems and is Doctor in electronics.
Dr Martin Koyabe
Dr Martin KoyabeCenerva Trainer
Senior Project Manager | Lead GFCE-AUC Coordination at Global Forum on Cyber Expertise (GFCE) where Martin is leading coordination and collaboration between the GFCE and African Union Commission (AUC) in developing Cyber capacity and capability building in Africa. Previously Martin was the head of research and consultancy at the Commonwealth Telecommunications Organization (CTO). Martin has over 15 years experience in ICT innovation, research and development.
Dr Sara Nogueira Silva
Dr Sara Nogueira SilvaCenerva Trainer
Sara is a teaching associate at the Microsoft-funded Cloud Legal Project, at Queen Mary University of London (QMUL). She has 20 years’ experience working in law. For a number of years, she assisted and advised companies from different sectors in her home country, Portugal, in several fields of corporate law. Subsequently, after finishing her Masters, she lectured E-Commerce Law at QMUL while reading her PhD.
Sara’s PhD research focused on autonomy in cyberspace. In particular, she proposes a framework to analyse the complex dynamics between anonymity, the legitimate search of information online (what she called “my search and research”) and the fundamental rights of privacy, data protection, freedom of expression and information.
Johan David Michels
Johan David MichelsCenerva Trainer
Johan David Michels (known as “Dave”) is a Researcher and PhD candidate at the Microsoft-funded Cloud Legal Project at Queen Mary University of London (QMUL), and a guest teacher at the London School of Economics (LSE). He has over 10 years’ experience working in law and policy, including at UK communications regulator Ofcom and at the United Nations in The Hague. He has lectured in IP, e-Commerce, and Information Security and the Law at QMUL and LSE. He has published articles on a range of IP/IT issues, including most recently on cybersecurity law in the European Law Review (with co-author Ian Walden). His PhD looks at the legal protection of digital assets.
Tony Harris
Tony HarrisCenerva Trainer
Tony is a former spectrum regulator following 25 years’ service with the UK Office of Communications (OFCOM) and DTI Radio communications Agency. Career progression led from spectrum monitoring into CEPT and ITU activities in satellite broadcasting regulation and frequency coordination. Latterly, he was Head of Monitoring at Baldock International Radio Monitoring Station near London, responsible for all UK spectrum monitoring activities. Tony became a spectrum management consultant in 2007 working with regulators, industry and the ITU, with a special focus on Africa. His current position is regional business development director in Africa with TCI International Inc. of Fremont, California, a leading manufacturer and global supplier of spectrum management and monitoring systems to spectrum regulators, militaries, security and intelligence agencies. Tony has a first class BSc Honours Degree, is registered with the UK Engineering Council as an Incorporated Engineer and is a Fellow of the Institution of Engineering and Technology.
Dr Kelly Wong
Dr Kelly WongCenerva Trainer
Dr Wong is a Research Scientist at the University of Maryland, where he also lectures on the Comparative & International Cybersecurity Policy, Honors College Cybersecurity Program.
He has 25 years of experience working on the academic, policy, regulation, and implementation frontiers of ICT and digital technologies, as well as being a published author. He is a former president of the Digital Bridge Institute, training institute of the Nigerian Communications Commission. Current projects include developing a decision-support Cybersecurity Policy Toolkit, presented and organized in a distributed web based.
Graham Butler
Graham ButlerCenerva Trainer
President & Chief Executive Officer Bitek International Inc. Founder of Bitek International Inc., Graham has over 33 years of international experience in virtually all aspects of telecommunications services and product arenas, including co-founder and Executive Vice President of @IPBell (latterly Cascadent Communications) one of the world’s first commercial (b2b) Global VoIP networks backed by Cisco & HP. Graham is a highly sought after and internationally renowned speaker and lecturer to various global agencies on such topics as VoIP fraud & lawful intercept prevention & planning. Bitek International is member of the Global Cybersecurity agenda High level experts group for the ITU (International Telecoms Union).
David Darwin
David DarwinCenerva Trainer
David is a US-qualified lawyer and regulatory consultant with experience in the United States, Africa, the Middle East and South Asia. Through his firm Darwin Telecommunications Regulatory Consulting Ltd, he advises mobile operators, government agencies and the GSMA on telecom corporate policies, regulatory strategies, and licensing framework reforms. He also regularly delivers seminars on competition policy to government ministries and regulators.
Bob Stewart
Bob StewartCenerva Trainer
Professor Robert (Bob) Stewart is currently the MathWorks Professor of Signal Processing at the University of Strathclyde. He has been a professor at the University of Strathclyde since 2006 and is also a long-standing visiting professor at the University of California, Los Angeles (UCLA) Extension School.

At Strathclyde, Bob is Chair and Head of the Department of Electronic and Electrical Engineering, with more than 55 academic staff and almost 300 researchers.

He has been working on digital communications and software-defined radio in recent years, with a specific interest in radio standards such as LTE, 802.11, and most recently on wireless white space radio utilising TV spectrum frequencies.