A call centre in Bristol, designed to handle non emergency NHS calls is failing patients, according to an undercover investigation.
Channel 4's Dispatches programme claim the 111 service, run by private healthcare company Harmoni, is sending out ambulances for the wrong reasons and not providing sufficient equipment or training for staff.
On Monday, NHS Direct pulled out of its main contracts of the 111 service, including one in Somerset.
Harmoni said their services are reviewed weekly to ensure safety.
The Conservative MP for Bristol North West Charlotte Leslie is a member of the Commons' Health Select Committee: