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In page Handley Page Hyderabad:

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A single prototype W.8D was ordered by the Air Ministry in January 1923, first flying in October 1923 and was delivered to the Aeroplane and Armament Experimental Establishment (A & AEE) at Martlesham Heath for evaluation against the Vickers Virginia.[1] On the basis of this evaluation, the aircraft, now called the Hyderabad was ordered for use by the RAF.[1]