These Regulations deal with terms in contracts to which the law of England and Wales or the law of Northern Ireland applies which prohibit or restrict the assignment of receivables. A receivable is a right to be paid under a contract for the supply of goods, services or intangible assets. Various types of contract are excluded from the scope of the Regulations.
Link: The Business Contract Terms (Assignment of Receivables) Regulations 2018
Source: Legislation .gov.uk