The Sunshine Stock (also known as ‘new type’) was introduced in 1936 and entered service on premier expresses such as The Bristolian and the Cheltenham Flyer. Subsequently they were cascaded into general service. The name derived from the large picture windows on the corridor side. They had end vestibules and a mix of corridor window sizes with 4′ wide for 3rd class and 5′ wide for 1st class. Sliding vents were provided in some corridor windows.