Police have closed Tooting High Street after a crash between a motorbike and car.
The road has been closed off between Blackshaw Road and the A217, Tooting Broadway while emergency services deal with the incident.
A man is believed to have suffered a broken leg.
Diversionary routes have been established for bus routes including the 57, 131, 155, 219, 264, 280 and 493.
Police are unable to say how long the road will be closed