"To deter people from doing this sort of thing": Boult v Together Personal Finance Ltd

Hugh Jeffery

Where parties have agreed and executed a bilateral written instrument, it is an obviously bad idea for one of the parties to subsequently amend that instrument without the consent of the other. Quite clearly, the instrument as amended will be unenforceable. However, the consequences may be much more severe; the instrument may well be entirely void such that the party who would have benefited from the alteration cannot fall back on the original agreed terms.