Emergency services were called to a collision involving two cars in Chesham.
It happened on Monday in Ashley Green Road.
One car was on its roof when they arrived.
One woman, injured, and two children, uninjured but suffering from the effects of shock, were out when they arrived.
One man was out of the second car, uninjured.

Council updates Hackney Carriage & Private Hire Licensing Policy
Buckingham Household Recycling Centre reopens this week
Return of 'park pop-ups' for local businesses
Bucks Labour MPs demand urgent clarity on Buckinghamshire Family Hub
Aylesbury Town Council demands urgent transfer of neglected sports facilities
Council launches new Growth Fund to boost the county's economy
Support for Buckinghamshire households that use heating oil
Ward councillor announces party switch












