It is recommended that fixed electrical installations are inspected and tested every 5 years in accordance with IET wiring regulations and an inspection certificate obtained in every case.
Any work required on the installation should only be undertaken by contractors registered with the National Inspection Council of Electrical Installation Contracting (NICEIC) or the Electrical Contractors Association (ECA).
Portable electrical equipment should be inspected on a regular basis, ensuring that worn flexes, broken plugs/sockets, etc. are replaced immediately.
Maintaining portable electrical equipment in offices and other low risk environments provides further guidance.