Great Northern, Piccadilly and Brompton Railway
UNDERGROUND RAILWAY COMPANY IN LONDON
Great Northern, Piccadilly & Brompton Railway; Great Northern & Strand Railway; Brompton & Piccadilly Circus Railway; Great Northern and Strand Railway; Brompton and Piccadilly Circus Railway; Piccadilly Railway; Piccadilly railway; GNP&BR; District Railway deep-level tube line
The Great Northern, Piccadilly and Brompton Railway (GNP&BR), also known as the Piccadilly tube, was a railway company established in 1902 that constructed a deep-level underground "tube" railway in London.A "tube" railway is an underground railway constructed in a cylindrical tunnel by the use of a tunnelling shield, usually deep below ground level.