The Bristol Blenheim is a British light bomber aircraft designed and built by the Bristol Aeroplane Company that was used extensively in the first two years of the Second World War. It was originally developed as the civil-orientated Type 142 in response to Lord Rothermere‘s challenge to produce the fastest commercial aircraft in Europe. First flying in April 1935, the Air Ministry was quickly impressed by its performance and ordered a modified design as the Type 142M to serve in the Royal Air Force (RAF) as a bomber. On 10 March 1937, deliveries of the newly named Blenheim commenced to RAF squadrons.
Additional Information: en.wikipedia.org/wiki/Bristol_Blenheim