Further, a Royal Air Force station was also established using one area of the tunnels, RAF Box, and the Bristol Aircraft Company developed a fallback aircraft engine factory which never went into production.
Further, a Royal Air Force station was also established using one area of the tunnels, RAF Box. Due to the heavy Bristol Blitz, in 1940 Alfred McAlpine developed a fallback aircraft engine factory for the Bristol Aeroplane Company, which never went into production.