Welcome to K4 Soils Laboratory

About Us

K4 Soils was established as a Partnership in 1993 for the provision of laboratory and field testing services within the geotechnical engineering and related industries. K4 Soils is a UKAS accredited laboratory (UKAS accreditation No. 2519). A list of the tests we typically carry out, and the current rates are available here

If there are any tests not on the list, please do not hesitate to contact us to discuss. Our client base includes some of the largest engineering consulting organisations in the UK, property developers, and construction companies as well as private individuals. We have worked on many high profile projects such as the Olympic Park Stratford, Emirates Stadium, Wembley Stadium, Ministry of Defence Sites and more recently HS2.

The Partners have extensive knowledge of soil testing and foundation design and if required are able to assist in choosing the most appropriate testing for our clients.  We have an extensive range of equipment to cover all testing needs and have multiple apparatus to assist us in meeting deadlines for even some of the more advanced testing such as oedometers, effective stress, shearbox and permeability testing.

Management of all data is handled electronically using Keynetix © Keylab 2 software, which allows us to import all of our clients testing requirements using AGS 4.0 data transfer. This facilitates rapid and concise set-up of projects in the laboratory, and accurate and expedient issuing of reports. A copy of our electronic schedule is available on request. We can also provide AGS data is either 3.1 or 4.0 format.

As of April 2019 K4 have successfully made the transition to ISO17025:2017 and are now accredited by UKAS for Effective Stress and Triaxial Permeability Testing.   

UKAS Schedule of Accreditation

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K4 Soils Laboratory

01923 711288



09:00 – 17:00


09:00 – 17:00


09:00 – 17:00


09:00 – 17:00


09:00 – 17:00