Our StoryImpact on World War TwoWhy It Matters?Storm Clouds GatherCottage IndustryIntelligence FactoryImpact and LegacyPreserving Bletchley ParkThe ChallengeEnigmaLorenzJapanese CodesLow Level Codes and CiphersDiplomaticCodemakingBletchley Park PeopleWho were the Codebreakers?Find a VeteranAbout the Roll of HonourThe Path of a MessageIntercept - Y StationsDecryptionAnalysisDisseminationImpact on World War TwoLandSeaAirCollections and ResearchCollections UncoveredOur CollectionsArchives and LibraryObject CollectionOral HistoryBuildings and LandscapeResearch and EnquiriesRelated OrganisationsWhat impact did Bletchley Park have on World War Two?LandIntelligence from Bletchley Park was vital in the Allies’ land battlesSeaBreaking German, Italian and Japanese naval codes was vital to the war effortAirBletchley Park was able to read huge numbers of enemy air force messagesLandIntelligence from Bletchley Park was vital in the Allies’ land battlesAirBletchley Park was able to read huge numbers of enemy air force messagesSeaBreaking German, Italian and Japanese naval codes was vital to the war effort