Hellios operates the the Joint Supply Chain Accreditation Register (JOSCAR), the shared supplier accreditation register for the UK's defence, aerospace and security sectors. It gives buyers a single, validated source of supplier information, covering areas such as financial standing, quality, cyber security, and compliance so that a supplier can register once and be recognised by many buyers, rather than completing separate checks for each. Its community includes many of the sector's major buyers, among them primes such as BAE Systems, Babcock, Leonardo and Lockheed Martin.