Local authorities have a statutory duty to enforce the Building Regulations. If a local authority or person ordering the work have not been provided with the necessary details of completed electrical installation work, the work will be illegal, whether or not it complies with the current Wiring Regulations and the Building Regulations. In such cases the local authority will need to issue a Regularisation Certificate. This is likely to require the installation owner to have the work inspected and tested by a competent person. This may involve hidden parts (such as buried cables) being exposed for inspection. As indicated in the Non Conpliance Section, the installation owner is likely to wish to pass on finacial liability for such problems to the person that carried out the work.

Specifiers such as local authorities, builders, architects and housing associations will require their electrical contractors to comply with the Building Regulations, and will check that the necessary certification and notification is carried out.