A man was airlifted to hospital with serious injuries after falling off a skateboard.
Police were called to the incident at around 6.45pm after reports he had fallen from his board.
When they arrived they found the man, who is believed to be from Hythe, Hampshire, had suffered a serious head injury.
An air ambulance as well as paramedics were called to the scene and the man was airlifted to a London hospital for treatment.
A resident who witnessed the incident told KentLive : "The air ambulance landed on our playing field.
"We have never seen so many police and ambulances."

A spokesman for Kent Police said: "Kent Police was called at around 6.45pm on Saturday 11 September 2021 to a report that a man in his 20s had suffered a serious head injury after falling from his skateboard in Hythe.
"Officers attended and the man was airlifted to a London hospital for treatment.
Pictures taken from the scene show the air ambulance flying low over the field after having taken off.
Other images show a large police presence on the road with both police and paramedics in attendance.
The road appears cordoned off while the emergency services worked.
Members of the public were urged to stay away while paramedics attended to the man and the air ambulance approached.