CTS (Construction Testing Solutions), is a leading provider of on-site and laboratory testing services. Since inception, we have established a reputation for excellence in servicing the UK construction, quarry products and civil engineering industries.

Our network of laboratories, field-based teams and geotechnical and geoenvironmental consulting offices provides coverage across the whole of the UK. This allows us to offer an extensive range of soil, aggregate, concrete and bituminous materials testing. Other services include full chemical analysis, site investigation, structural investigation, geotechnical consultancy and more.

A program of acquisition has seen the CTS business grow exponentially over the past 10 years, extending our capabilities and capacity across a broader range of testing and geotechnical services.


In Situ Site Investigation were acquired on 22nd August 2022. An award winning geotechnical and geo-environmental company, and a leader in Cone Penetration Testing techniques and ground investigation services.

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Concept Engineering Consultants, a leading provider of geotechnical, structural and geo-environmental services joined CTS in August 2022.

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GT Certification was acquired in May 2022, a measurement services company specialising in construction materials testing and torque and force calibration services.

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Mason Evans Partnership were acquired in February 2022. A specialist Geo-environmental consultancy, they provide a variety of solutions to developers, house builders, distillers, local authorities, contractors, consulting engineers and architects.

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Silkstone Environmental was acquired in August 2021, which further underpins our current services, in addition to bringing new capacity in-house to offer landfill and quarry monitoring, and permit and planning consultancy.

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Nicholls Colton Group was acquired in February 2021, which strengthens our existing portfolio as well as bringing new capabilities, such as bridge structure consultancy and chemistry testing services.

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Card Geotechnics Limited (CGL) was acquired at the end of 2020 which has seen a significant expansion of

our Geotechnical Services.

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Site Services

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Soil Stabilisation

Effective reuse of site won materials has widespread mechanical, financial and environmental benefits; so, the accurate testing of materials is essential.

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Materials Testing

Our site technicians and engineers carry out sampling and testing to stringent BS EN, ISO, ASTM and Highway Works Compliance standards.

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Site Investigations

Our in-house consultancy and technical teams design and carry out phased site investigations, to meet our clients’ individual needs.

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Structural Investigations

Our specialist structural division carry out intrusive and non-intrusive surveys and assessments on buildings, road and rail structures.

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Laboratory Services

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Operating from a network of UKAS accredited testing laboratories, we offer a comprehensive range of soil testing and classification services.

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Laboratory testing of a range of aggregate materials takes place in our purpose-built, air conditioned and temperature controlled laboratories.

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We offer a wide range of laboratory test for both fresh and hardened concrete; including slump, air content, coring and cube manufacture.

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Chemistry Testing Icon


Our lab specialises in the chemical analysis of a wide range of construction materials including soils, aggregates, concrete, mortar, paints & coatings.

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Construction Testing
01302 352 652