London's ambulance service said it had taken more than 30 people to hospitals across the British capital after an attack which killed six people late on Saturday.

"We have now taken over 30 patients to five hospitals across London following the incident at London Bridge. A number of other patients were treated for less serious injuries at the scene," said Peter Rhodes, London Ambulance Service's assistant director of operations.

READ: Police rush to three attacks in central London, at least one dead

READ: British PM May says treating London incidents as potential act of terrorism