'A Short Singapore III flying boat of 209 Sqn leaves RAF Mountbatten, Plymouth, for an anti-piracy patrol during the Spanish Civil War.' That conflict broke out just as No 209 was re-equipped with Singapores in July 1936. The squadron deployed to RAF Kalafrana, Malta for three months in 1937. K6921 served with No 209 until it was struck off charge in August 1939. Photo from: Imperial War Museums

'30,000 mile trip - one of the flight taking off at Mount Batten.' Five Londons flew out and back to Sydney. Photo by: Saidman / Daily Herald / National Science and Media Museum

Saw only two years' service with 209 Squadron at Mount Batten. This was the second of four Perths. Photo from: Air Force Museum of New Zealand

Four examples were built of the Blackburn Perth. Derived from the earlier Blackburn Iris, it was the largest biplane flying boat ever to enter service with the RAF. K3582 was delivered to No 209 Sqn at RAF Mount Batten (Cattewater) in Plymouth in January 1934. Photo from: Nationaal Archief (Netherlands)