A British Quad film poster is a type of movie poster that is used in the United Kingdom. It is a large poster that measures 30 inches by 40 inches. British Quad posters are typically printed in limited quantities and are often rolled up and shipped to theaters.
The term "Quad" refers to the fact that the poster is made up of four Crown posters, which are smaller posters that measure 15 inches by 21 inches. The Crown posters are glued together to create the larger Quad poster.
British Quad posters are often considered to be more collectible than other types of movie posters because they are more limited in number. They are also seen as being more artistic and visually appealing.