The term "British Airship" refers to the lighter-than-air vehicles developed in the United Kingdom during the early 20th century. These airships, primarily made of a gas-filled envelope, were used for military reconnaissance, passenger travel, and cargo transport. Notable examples include the R101 and R100, which were part of the British government's airship program. British airships played a significant role in aviation history, particularly during World War I and the interwar period. They were designed to navigate long distances and could carry large payloads. However, safety concerns and the advent of heavier-than-air flight led to their decline in popularity.