A woman suffered "potentially life-threatening" injuries when she run over by her own car as it rolled off her driveway in Coulsdon.
The 40-year-old is being treated for serious leg injuries after the accident in The Vale this morning.
Police were called to the residential street by paramedics and have since cordoned off the road.
The London Air Ambulance was also called.
The Vale remains closed whilst @MPSRTPC and @Ldn_Ambulance work at the scene. @LDNairamb now left #Croydoncops pic.twitter.com/CVCgp9vS0I
— Croydon MPS (@MPSCroydon) July 21, 2016
A spokesman for Croydon police said the woman had suffered "possible life-threatening" injuries, but stressed the situation was still in its "early stages".
Emergency services were still on the scene at about 9am, according to a tweet from Croydon police.
The road had reopened by midday.
Did you see what happened? Call the newsdesk on 020 8722 6351 or email daniel.omahony@newsquest.co.uk
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