G Scammell and Nephew Ltd v HC&JG Ouston [1941] 1 AC 251 is an English contract law case, concerning the certainty of an agreement.
It stands as an example of a relatively rare case where a court cannot find some way in which a contract can be made to work.
The defendants subsequently pulled out of the agreement, and when the claimants attempted to sue, the defendants argued that the agreement could not be enforced because it was too uncertain.
The House of Lords held this was too vague for the contract to be enforced.
Viscount Simon LC, Viscount Maugham, Lord Russell and Lord Wright all gave speeches.