English contract law

There are principally two forms of contracts in English law; a contract Under Seal and a Simple contract. An Under Seal contract is signed with rigorous formalities and is usually present in a gratuitous contract or in a contract for the transfer of an immovable (property). A Simple contract does not require any formalities, nor does it have to be written. Simple contracts demand the contracting parties to do or not do something.

A contract will become null in three instances; Error (if made on the essential quality of the contract), Misrepresentation of the facts (done either in good faith or bad faith), Duress.

A contract in English law will be declared illicit if it is prohibited by an existing English law (i.e. if the contract is contrary to the freedom of commerce). It will also be unlawful if it goes against English public order.