Geotechnical Testing for Industrial & Domestic Projects 

At GSTL, we work with a variety of clients across the UK and Internationally. Our client base ranges from civil engineering and construction industries, to Government, and even domestic projects such as self-builds.  

Our state of the art laboratory delivers a huge range of geotechnical testing to suit every budget and site requirement. Our highly experienced site technicians have the specialist knowledge and training to conduct and deliver exceptional service levels. 

Geotechnical Testing

Why choose GSTL?

  • Free sample collection
  • Fast turnaround
  • UKAS accredited laboratory
  • Competitive rates
  • Intuitive & adaptable reports
  • Online tracking system

GSTL are at the forefront of geotechnical testing, offering the most up-to-date methods in the laboratory and on site. We also offer Aggregate, Rock, Concrete testing services as well as range of on-site testing, window sampling and coring services. 

Site services 

Our onsite and in-situ testing services can offer a broad range of in-situ testing techniques. Cornering compliance testing, earthworks validation or stability of platforms for piling rigs and cranes. Our experienced team of field technicians will give you a professional independent assessment of the underlying materials. 

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Concrete Sampling

BS EN 12350-1

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Landfill Site Testing

BS 1377 Part 7 / BS 1377 Part 9

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Plate Bearing Test

BS 1377:Part 9

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Coring Services

BS EN: 12504-1

Laboratory Testing Services 

Our UKAS accredited laboratory is fully equipped to rapidly deliver all your material testing requirements.  Our accreditation is limited to those activities described on our UKAS 2788 schedule of accreditation.

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Aggregate Testing

Our experienced laboratory staff can perform physical and mechanical testing on a broad range of natural and recycled aggregate at competitive pricing, ideal for the civil engineering and construction industries.

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Contamination Testing

With respect to analytical testing GSTL have evolved close professional liaisons with a small number of Analytical Laboratories. This close liaison has allowed preferential rates to be established which in turn have been passed on to our Clients. All the Analytical Laboratories are UKAS Accredited and are visited by ourselves on a regular basis to ensure that good communication is maintained.

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Soil Testing

Our specialist laboratory provides a diverse range of reliable Soil Testing that meet national and international standards. We can help you assess the quality and suitability of the soil to help inform your planning and decision-making and save you unnecessary cost in the future.

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Rock Testing

We have modern facilities that are fully-equipped to perform the most commonly required geotechnical rock tests. We strive to provide you with the most accurate, timely, and professional testing service to help keep your project on track.

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Concrete Testing

Our UKAS accredited laboratory offers a wide range of Concrete Testing, to ensure you meet the necessary standards to help your project stay compliant, including concrete cube testing and diamond core drilling. At GSTL Ltd we pride ourselves on the capacity and range of our material testing services. We work with clients in the UK and internationally from our base in Llanelli, South West Wales.

State of the art premises

What our clients say

At GSTL Ltd our goal is to provide independent testing that will deliver dedicated professionalism, commitment and confidence. Our aim is to ensure we provide our clients with an exceptional service. Our UKAS accredited laboratory (Our accreditation is limited to those activities described on our UKAS 2788 schedule of accreditation) and office is situated in Llanelli, South West Wales within quick access to the M4.