What electrical work needs Building Control approval?

Small jobs such as putting in a socket-outlet or a light switch on an existing circuit will not need to be notified to Building Control (although there will be some exceptions for high risk areas such as kitchens and bathrooms).

All work that involves adding a new circuit to a home, or electrical work in kitchens and bathrooms or in special locations (refer to related links below for further information) will need to be either notified to Building Control with a building regulation application, or carried out by a competent person who is registered with a Part P Self-Certification Scheme.

http://www.aylesburyvaledc.gov.uk/planning-building/building-regulations/electrical-safety/sure-comply-regulations/