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Crowds gathered to watch a special spitfire carrying the message 'Thank U NHS' pass over Kent.
Staff at Darent Valley Hospital watched as the iconic Second World War fighter flew over Dartford this morning.
The NHS celebrated its 72nd birthday last week and Britons across the country paid tribute to the health service on Sunday with a Clap for the NHS.
The Spitfire had set off from its base at the Imperial War Museum in Duxford Airfield and flew over parts of Essex and Cambridge before heading for Kent.
It travelled over the hospital in Dartford with 'THANK U NHS' on the underside of its wings shortly before 10.30am.
The iconic aircraft will be making another flight in the afternoon – along a different flight path – so more people can enjoy the wonderful sight at different times.
Today also marks 80 years since the German Luftwaffe began its long series of air raids on parts of the county, in what became known as the Battle of Britain.
A series of memorial events have been planned across the county.