The Swift Cadet was the last car to be made by Swift, being produced between 1930 and 1931.

The Cadet was an attempt to compete with the £100 cars. It had an 850cc Coventry Climax engine and a price of £149 for the tourer and £165 for the saloon but Swift was too small to compete with the likes of Ford and Morris, and closed in 1931 after its suppliers foreclosed on their debts. Coventry Climax were left with a number of engines from the Cadet model, which they used as the basis of their Second World War fire pump engine designated FSM, the SM standing for Swift Motors.