If you work for local or national government, an independent property developer, consulting engineer, or any other type of business involved in ground investigation, within the UK or overseas, then we can be of help to you.

We design and supervise geophysical site investigations on all scales, from small commercial developments up to international airports, both pre- and post-construction, and regional studies for geological investigations, and much in between. We can work with geophysical contractors appointed by you locally or we can select and commission an appropriate UK geophysical contractor through us. Irrespective of the size of your survey area, we can assist you.


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We advise clients on the best use of geophysics for applications including but not limited to:

  • Contaminated and derelict land ground investigations
  • Acid-tar lagoon investigations
  • Landfills – location and monitoring, structure, leak detection
  • Mapping contamination and pollution plumes
  • Mapping voids beneath highways, roads, and pavements
  • Highways pavement investigations
  • Locating buried structures, including UneXploded Ordnance (UXO)
  • Locating mine shafts, galleries, and natural cavities
  • Archaeological investigations
  • Landslide and slope instability investigations
  • Pipe-route and new road/bridge alignment surveys
  • Mapping Quaternary (glacial) sediments
  • Geohazard and glaciology investigations
  • Mapping bedrock structures (solution features, faults, etc.)
  • Groundwater resource evaluation
  • Ground stiffness seismic investigations
  • Rippability test for quarrying
  • Dredge testing of marine sediments
  • Marine resource evaluation
  • Sea floor sediment characterisation
  • Marine geohazard investigations
  • And much more besides

With our associates we can also help you with your environmental and geotechnical queries.



"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