Clients have a duty to make reasonable enquiries about underground services and pass relevant information to the designer(s) and contractor(s). Your own files and other records may contain information on underground services. If they do, remember that it may have been obtained for previous work and may be out of date. The most up-to-date information should be included in the tender information.
A client who is unable or unwilling to obtain this information must allow the contractor sufficient time and resource to do so instead.
Clients need to consider how contractors have addressed the risks from underground services.