The name Nuffield Gutty was used for three prototype vehicles built in 1947 in an attempt to meet a British War Department specification for a to replace the American Jeep that was in service in large numbers following the war. This vehicle featured a horizontally opposed 4-cylinder engine similar to that designed for the planned small post-war car to be called the Morris Mosquito, that eventually appeared (with a conventional vertical side-valve engine) as the Morris Minor. The confusingly similar name "Nuffield Guppy" had previously been used for an unrelated prototype vehicle.