TV presenter Ant McPartlin has been arrested on suspicion of drink-driving after a collision involving three vehicles in south-west London.
The Metropolitan Police said officers were called to Lower Richmond Road in Mortlake at 15:59 GMT on Sunday.
The ambulance service and London Fire Brigade also attended and a number of people were treated for minor injuries.
Police said a 42-year-old man was arrested at the scene after failing a roadside breathalyser test.
He was taken to a south London police station for questioning before being released under investigation on Monday.
A child passenger in one of the cars was taken to hospital for a check-up as a precaution, the Met added.
Mr McPartlin, who co-hosts several ITV shows with Declan Donnelly, including I’m A Celebrity Get Me Out of Here, confirmed in January he was divorcing his wife of 11 years, Lisa Armstrong.