Owing to pressure of work at Handley Page's Cricklewood factory and to ensure security, the first prototype was constructed by Harland and Wolff at Belfast, Northern Ireland, being assembled at Cricklewood and first flying on 22 May 1918.Bowyer 1992, pp.122–123. Orders were placed with a number of companies (including Harland and Wolff, Beardmore, Handley Page, Grahame-White and Alliance Aircraft for a total of 210 V/1500s at £12,500 apiece, although only 40 aircraft were completed, with a further 22 produced as spares.Mason 1994, p.111. The Beardmore order was for fifty machines in two batches, the first batch was for 20 and the second batch for 30. The company accounts state production continuing into 1921.The test pilot for Beardmore was Clifford Prodger and the aircraft were delivered from Inchinnan Aerodrome (Ref Company accounts UGD 100/8/1921 University of Glasgow and Mac Kay)
