Near-Surface Geophysical & Geohazard Consultancy Services


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Technical excellence underpinned by leading-edge Research and Development


We provide thought leadership and are trusted advisers for the benefit of our clients


To make a positive contribution to the Green Agenda and work towards a net zero carbon target by 2050

If you want to remove the risk from your next engineering project, then make sure you get the right geophysical support and advice.

If you're uncertain about the ground conditions of your next project or you have concerns over the quality of the bedrock that you're planning to excavate, then you could be on a collision course with a whole host of technical complications.

Making certain that your project runs smoothly can be a simple process with the help of our team of specialists at Reynolds International Ltd.

  • Marine Geophysicists
  • Terrestrial Geophysicists
  • Structural Geologists
  • Specialist GIS Geo-Analysists
  • Remote Sensing Specialists


Terrestrial Geophysical Site Investigation Consultancy

Create better ground models through the use of geophysics and reduce the risk of unforeseen ground conditions...

Offshore Wind Farm Geophysics Consultancy

Benefit from our unique, leading-edge seismic data processing and 3D interpretation workflow.

Earthquake Preparedness Consultancy

Reduce your vulnerability in the event of a major earthquake through preparedness training and contingency planning.

Geological and Glacial Hazard Assessment & Mitigation

Minimise loss of life and damage to infrastructure in the event of a Glacial Lake Outburst Flood.


Geotechnical Engineering
Remote sensing analysis
Airborne geophysical programmes
National Capacity Building
Technical Training & Development
Borehole geophysical profiling
Environmental consultancy services
GIS and data visualisation


Although geoscientists, we have made a deliberate choice not to work in Hydrocarbon Exploration including Shale Gas extraction, in any way. 
Rather, we focus on supporting renewable energy projects, such as Offshore Wind Farm development, Tidal Range schemes, and major hydropower development, in all of which we play a significant international role. We do not actively support mineral extraction.

Offshore Wind

Our Clients Include

Foreign & Commonwealth Office (FCO)
Foreign & Commonwealth Office (FCO)
United Nations agencies
United Nations agencies
Renewable Energy Developers and Consultancies
Renewable Energy Developers and Consultancies
Government Agencies
Government Agencies
International Development Banks
International Development Banks

Our Clients Include



"CEGS have known of Reynolds International Ltd, previously Reynolds Geo-Sciences Ltd, since the mid-1990s and have utilised their services over the years for specific surveying in the former underground coal and iron ore fields of West Cumbria. As a lead consultant, we have used Reynolds International to successfully locate and define both the underground workings and the mine entries that pose a hazard to the built environment, especially shafts in the iron ore workings. Additionally, we have also enrolled on the CPD training courses that are organised by Professor John Reynolds and these provide an invaluable update to our professional skills. We will continue to use Reynolds International as our preferred specialist Geophysical consultancy because of the consistent high professional standards that are applied to every project."

Dennis R. E. Dickins, CEGS, Cumbria

"The British Embassy, Bucharest, has been working with Professor John Reynolds, of Reynolds International Ltd, since 2008 in order to ensure that the Embassy’s earthquake and emergency planning is up to date; and that all staff, dependents and the British community, for which the Embassy has a responsibility, are briefed on the causes, the preparations and the relevant actions in the event of an earthquake. Professors Reynolds’s knowledge, advice and guidance has been invaluable in ensuring that the embassy’s plan is as up to date and in an as workable format as possible. His knowledge is second to none and his guidance is clear concise and in an understandable format."

B A Davidson – HM Consul, Head of Corporate Services, Bucharest, Romania

"The earthquake preparedness training course provided by Professor John M. Reynolds for BAT Romania’ employees during 3 days in February this year was a well designed and tailored course given the high seismic hazard area where Romania is located. The main aim of the course was to provide our employees with necessary information to help them to reduce their own vulnerability at work, in their out-of-work activities and in their family lives. I was very pleased with the results of the training and, most importantly, I have received very positive feedback from participants. I recommend this course for other commercial organizations in Romania or abroad."

Eugen Stan, Business Security Manager


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August 2021 Newsletter

Welcome to this month’s newsletter with the focus on Geohazards. The hydropower sector should take note of two important events....

July 2021 Newsletter

Welcome to this month’s newsletter with the focus on the application of environmental and engineering geophysics to ground investigations. With...

When mountains and lakes move: causes and consequences

Prof. John M. ReynoldsReynolds International Ltd, Mold, Wales, UK In young, dynamic, mountain regions, such as those in the Himalayan...