Health and safety accreditation services. Tel: 01225 667 590 or Email: [email protected] The ACDC Register is powered by Quidos Ltd, an accreditation body since 2006 with over 1,000 members. Subscribing to the ACDC Register doesn’t just demonstrate to your customers, competitors, suppliers, staff and investors that you are committed to being compliant. Being part of the ACDC Register ensures that you are committed to best practice, you are joining an established accreditation body that you can trust and you are being guided and assessed to the very highest standard of quality within the industry. The ACDC Register. Raising standards, maintaining quality.