A Competent Person Scheme (CPS) is a government-approved programme that allows registered tradespeople to self-certify that their work complies with the Building Regulations — without needing to involve the local authority Building Control. For electricians in England and Wales, this means you can carry out notifiable electrical work under Part P of the Building Regulations and self-certify it through your scheme.
The two largest and most widely recognised competent person schemes for electricians in the UK are NICEIC (National Inspection Council for Electrical Installation Contracting) and NAPIT (National Association of Professional Inspectors and Testers). A third significant scheme is ELECSA, which is now part of the ECA (Electrical Contractors' Association) group.
Registration with any of these schemes demonstrates to clients, employers, and regulatory bodies that you are qualified, competent, and regularly assessed. It is one of the most important steps in establishing yourself as a professional electrician, whether you are self-employed or working for a contractor.