Photographed at RAF Northolt, Middlesex, UK, ca. 1926-27, source unknown
07/31/2019. Remarks by
Johan Visschedijk: "This aircraft belonged to No. 601 (County of London) Squadron of the Auxiliary Air Force. The squadron was formed at RAF Northolt on October 14, 1925, and initially flew Avro 504s, these being replaced by D.H.9As in June 1926."