What makes a requirement binding here
The Human Medicines Regulations 2012 (SI 2012 No. 1916) are the principal instrument for human medicines in the United Kingdom. Part 3, “Manufacture and distribution of medicinal products and active substances”, carries the licensing regime; its Chapter 2, “Manufacturing and wholesale dealing”, runs from regulation 17 to regulation 45AB and covers the grant of licences, the conditions attached to holding a manufacturer’s licence and a wholesale dealer’s licence, and the offences that attach to operating without one.
Through a licence held by a named site, and inspection against it. The MHRA issues a manufacturer’s/importer’s licence, a manufacturer’s “specials” licence for unlicensed medicines made to order, a manufacturer’s licence for investigational medicinal products, and a wholesale distribution licence. The agency publishes the standards it inspects against in two reference works practitioners cite by colour rather than by title: the Orange Guide for good manufacturing and distribution practice, and the Green Guide for wholesale distribution.