Wikipedia
An exclusion clause is a term in a contract that seeks to restrict the rights of the parties to the contract.
Traditionally, the district courts have sought to limit the operation of exclusion clauses. In addition to numerous common law rules limiting their operation, in England and Wales Consumer Contracts Regulations 1999. The Unfair Contract Terms Act 1977 applies to all contracts, but the Unfair Terms in Consumer Contracts Regulations 1999, unlike the common law rules, do differentiate between contracts between businesses and contracts between business and consumer, so the law seems to explicitly recognize the greater possibility of exploitation of the consumer by businesses.
Usage examples of "exclusion clause".
The policy did, in fact, contain a suicide exclusion clause: Section 1.