Handley Page Ltd opened a grass airfield just north of the town in 1929 for the production of aircraft. By 1939 Radlett Aerodrome was upgraded to have three hard runways for use in the production of Handley Page Hampden and Handley Page Halifax bombers during the Second World War. Post-war the airfield was used for production of Handley Page Hastings transport aircraft and Handley Page Hermes airliners. The SBAC held air shows here in 1946 and 1947 which subsequently moved to Farnborough. The Handley Page Victor bomber prototype was built here, with the main runway being extended in 1952 to allow flight testing, and there is now a road on this site named in its honour next to a DPD depot. Handley Page went bankrupt in 1969 and the airfield closed in 1970.