| Adenstar Construction Group |
| Services include civil engineering, groundworks, construction of roads, sewers and industrial plant, design and build and full consultation with Local Authorities and advice on specification and costings, reinforced concrete works and main frame contracting. |
| | Alder Communications Ltd. |
| Offer services related to the construction of the physical infrastructure required for mobile telecommunication networks. Includes an overview of offered services. |
| | All Foundations Ltd |
| Offer geotechnical and foundations solutions to the construction industry. Includes an overview of services, photograph gallery, and employment opportunities. |
| | Alliance Piling Ltd |
| Provide a range of services including installation of bearing piles, underpinning, and structural repairs. Client list and contact details |
| | Alpha Construction Ltd |
| Civil engineering and building contractors. Based in the Midlands, operating throughout the UK. |
| | Anderson Construction |
| Groundworks and civil engineering, superstructure concrete work and remediation. Based in Essex. |
| | BT Jenkins Ltd |
| Earthmoving contractor operating throughout Cornwall, Devon, Somerset and Dorset. Lists its services. |
| | Bachy Soletanche Ltd |
| The UK subsidiary of the Soletanche Bachy Group, contractors in foundation and underground engineering. |
| | Birse Civils Ltd |
| Provides a range of civil engineering construction services throughout the United Kingdom. Includes case studies and video library. |
| | Breheny Civil Engineering |
| Civil engineering and construction contractors, specialists in sewage treatment, highway construction, landfill sites and coastal defenses. |
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