privity of contract

Question 1

who can enforce a contract?

Answer 1

parties privy to the contract
however if a benefit is bestowed from such a contract onto a third party, then the rule is unfair - tweddle v atkinson

Question 2

exceptions

Answer 2

statute
3rd party trust
restrictive covenants
agency
collateral contracts
application of s56 of the law of property act 1925