This Practice Note considers why a third party may wish to rely on a contract to which it is not privy, and whether the common law doctrine of privity of contract may be avoided by recognising instead a collateral agreement, a group contract or an agency scenario on the given facts. Why consider the effects of contracts on third parties? Although your client is not a party to the contract in question, you may still want to know whether they may be: • liable for any obligations or • entitled to enforce any benefits under the contract. Consider the following scenarios: • in a contract between A (promisor) and B (promisee), A agrees to pay £1,000 to C (third party) • in a contract between A (promisor) and B (promisee), A agrees that any liability in respect of C (third party) should be limited to £5,000 In both of these examples, there is a benefit to C (payment of £1,000 and limitation of their liability to a fixed sum of £5,000, respectively)