After the First World War, airships were seen as the only viable means of long range air transport for passengers and freight. In Britain, this gave rise to the Imperial Airship Scheme of 1924 to link the outposts of the Empire by an airship service. Conceived as part of this scheme, the R.100 airship, built by private enterprise, successfully flew to Canada and back in 1930. This is the story of R.100, Britain's most successful passenger airship. It is a tale of schemes and politics, over-optimism and rivalry. It tells the full story of its design and construction under difficult conditions,...