Since 2005, all electrical work in dwellings in England and Wales, whether carried out professionally or as DIY, must meet the requirements of Part P of the Building Regulations.
Part P is in place to keep you and your family as safe as possible from electrical hazards, and applies to new domestic properties, as well as any alterations or additions to electrical installations in existing properties, including full or partial rewires.
By law, you as the homeowner or landlord must be able to prove that all electrical installation work on your property meets the requirements of Part P, or you will be committing a criminal offence.
Local Authorities have the power to make homeowners or landlords remove or alter any work that does not meet the requirements of the Building Regulations.