The Electrotechnical Certification Scheme (ECS) is the sole ID and competence card scheme for electrotechnical operatives in the UK and is recognised and endorsed by the industry.
Holding an ECS card proves:
your qualification status,
electrotechnical occupations,
your experience and relevant employer endorsements,
your identity,
your health, safety and environmental awareness,
adherence to industry CPD requirements and Codes of Professional Practice, and
any additional disciplines in which you are skilled to work.
https://www.ecscard.org.uk/