The kitchen car contained no passenger accommodation. Its sole purpose was to provide meals when the demand was greater than could be met by a kitchen/diner car. They were usually marshalled between at least one open first (e.g. Comet M16, M33, M34) and one or two open thirds (e.g. Comet M4, M5, M21, M22, M40, M41, M42). They were also used on excursion trains serving the open coaches which usually made up such services. Six were used in the 1937 Coronation Scot, having additional jumper cables as well as the special livery. Some (including the two preserved vehicles) were later rebuilt as inspection saloons.