The original rule is that only those who are party to a contract are bound by it and can benefit from it - Dunlop v Selfridge
Supported by the case of Beswick v Beswick
In Jackson v Horizon Holidays, it allowed Mr Jackson to claim on behalf of his family as he was a party to the contract
One exception to the rule of privity is collateral contracts
This is where a related agreement runs alongside the main agreement
Shanklin Pier v Detel
One exception to the rule of privity is agencies
This is when an agent is permitted to make a contract on behalf of another (principle)
The principle is bound by the terms of the contract although they didn't make it
The principle and the agent are treated as the same person
One exception to the rule of privity is restrictive covenants
Under land law, this is when land is purchased, the seller and purchaser can form an agreement about what can be done with the land - Tulk v Moxhay
One exception to the rule of privity is statutory exceptions - Contracts (Rights of Third Parties) Act 1999
This act allows a third party who is not party to the contract to sue one or both parties if:
s.1(1)(a) - The contract states that the third party should have rights OR s.1(1)(b) - The contract term is an attempt to confer a benefit to a third party
s.1(2) - The act will not apply if it appears that the parties did not intend a third party to have rights
s.1(3) - The third party must be expressly identified in the contract by name