The doctrine of privity of contract is a common law principle which provides that a contract cannot confer rights or impose obligations upon anyone who is not a party to that contract. It is related to, but distinct from, the doctrine of consideration, according to which a promise is legally enforceable only if valid consideration has been provided for it, and a plaintiff is legally entitled to enforce such a promise only if they are a promisee from whom the consideration has moved.
A principal consequence of the doctrine of privity is that, at common law, a third party generally has no right to enforce a contract to which they are not a party, even where that contract was entered into by the contracting parties specifically for their benefit and with a common intention among all of them that they should be able to enforce it. In England & Wales and Northern Ireland, the doctrine has been substantially weakened by the Contracts (Rights of Third Parties) Act 1999, which created a statutory exception to privity, providing, in certain circumstances, third parties the right to enforce terms of contracts to which they are not privy.
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