The Sub Surface Group is an independent group of companies, providing a comprehensive range of specialist geotechnical and environmental consultancy and site investigation services. Sub Surface Limited was founded on 28th March 1972 by Clifford Marsden and has grown considerably to become a nationwide highly regarded site investigation specialist company.

The Sub Surface Group head office is located in Preston, Lancashire and is home to Sub Surface North West Ltd, Sub Surface Consultants Ltd and Sub Surface Laboratories Ltd. We have a network of regional offices throughout Great Britain with in addition to Preston, Sub Surface North East Ltd located in Ossett, West Yorkshire; Sub Surface Midlands Ltd located in Tipton, West Midlands and Sub Surface South East Ltd located in High Wycombe, Buckinghamshire.

The aim of the group is to provide a high quality, efficient, reliable and cost effective service carried out by qualified and highly experienced staff throughout Great Britain from our network of local offices.

Sub Surface’s Association Memberships

The Sub Surface Group are proud members of the Association of Geotechnical & Geoenvironmental Specialists (AGS) and the British Drilling Association and are registered with Constructionline and CHAS