This Practice Note discusses the common law doctrine of privity of contract; the equitable and statutory exceptions to it; how the doctrine affects enforcing a contract against a third party and what happens when, notwithstanding the lack of privity, a contract has an indirect effect on a third party. For guidance on contracts and third parties more generally and on the Contracts (Rights of Third Parties) Act 1999 (C(RTP)A 1999), respectively, see Practice Notes: • Contracts and third party rights • Third party rights—the Contracts (Rights of Third Parties) Act 1999 What does privity of contract mean? 'Privity of contract' is a common law doctrine, which provides that you cannot either: • enforce the benefit of, or • be liable for any obligation under a contract to which you are not a party. Therefore, at common law, if your client is not a party to a contract (ie they are a third party) then they cannot sue or be sued under that contract. Example: A promises