Expert Witness, Technical Consultant

Position, Navigation & Timing


A nationally & internationally recognised expert in Position Navigation and Timing (PNT) Systems, Applications, Services and Technologies.

Leading expertise in GNSS & GPS Forensics & Expert Witness Services. Specialist in Position Navigation & Timing (PNT). Expert Advisor with National Crime Agency & Registered Expert Witness. 30 years’ industry experience in RadioNavigation & Communications.

  • Radio navigation systems and satellite navigation
  • Global positioning systems (GPS, GLONASS, Galileo, Beidou)
  • Augmentation systems (EGNOS, WAAS, GAGAN, MSAS, ...)
  • Vehicle tracking systems
  • SatNavs
  • Inertial Devices
  • Accelerometers
  • Vehicle Telematics including Insurance
  • Maritime navigation & communications systems; AIS
  • Aviation navigation & communications systems; ADS
  • Integrity & safety systems
  • Timing systems
  • Jamming & interference analyses
  • Terrestrial & Satellite Communications systems
  • Intellectual property & patents


• National Crime Agency (NCA) Expert Advisor; • Registered Expert Witness (UK Register); • Fellow, Royal Institute of Navigation (RIN); • Chair of Satellite Navigation Special Interest Group; • Professional Member, US Institute Of Navigation (ION); • European Commission Expert Group on GNSS Development; • UK National Space Technology Strategy PNT Committee; • External PNT Technology Lecturer (Post-Graduate): University of Nottingham, University College London; • Organising Committee / Technical & Session Chair / Invited Speaker / Expert Panel for International Conferences including ENC, INC, ION, RIN • Ph.D. & MSc. GNSS Integrity, Electronic & Electrical Engineering, University of Leeds; • B.Sc. (Hons.) Physics, University of Newcastle Upon Tyne; • 70+ open publications (full list on request - a few are in my blogs); • Seven patents filed (employer ownership various); • English, French, German, Italian, Spanish (bien y menos bien)


Criminal Cases

Expert Advisor registered with the National Crime Agency

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Civil Cases

Registered with the UK Register of Expert Witnesses

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Technical Consultancy

Position Navigation & Timing Systems; Communications

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t : 07455 958876 (UK)
See my entry  in the UK Register of Expert Witnesses



GPS Jamming - is it just a lot of noise?

GPS jamming has received a lot of attention in the PNT community in recent years. For most users, however, GPS continues to be the best positioning and timing system ever. So, what is all the noise about?

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Satellite Navigation Special Interest Group

I am Chairman of the Satellite Navigation Special Interest Group for Royal Institute of Navigation

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