 The vehicles supplied were based on Sunbeam's MF2B model, with two axles and a wheelbase of .They were fitted with single deck bodywork by Park Royal Vehicles, with 40 seats and room for 35 standing passengers.In order to enable them to be operated by just the driver, they included an overhang of beyond the front axle, allowing the entrance door to be mounted just behind the windscreen, so that payment could be made to the driver when entering the vehicle.