Possibly the last aircraft of it's kind in the world was found off the  coast of Kent last year and has been positively identified as a Dornier Do 17. The RAF is pretty sure which plane it is and of the crew of four that crashed the plane, 2 were killed and 2 were taken prisoner.  The RAF Museum at Hendon is trying to raise funds to recover the aircraft and put the remains on display.  There are no plans to restore the aircraft in order to keep it's originality intact. BBC story and video is here.

The Dornier 17, nicknamed the Flying Pencil because of it's unique slim fuselage, took part in the Spanish Civil War and the Battle of Britain, but by the end of 1941 it was outclassed by newer types.  It was somewhat under powered as the engines it was designed for were needed for fighters, and the majority of the planes ended up with increased bombloads and lesser engines.  However they handled fine at low altitudes and were popular with crews.  When their use as a bomber was superseded by other aircraft they were tried out in a night fighter role, but didn't do particularly well and were removed from front line duty by mid-1942.

This video shows Do 17's used by Finnish Air Force in WW2