An investigation has begun following a collision between a tourist boat and a cargo barge on the Thames yesterday afternoon.
Hundreds of people were evacuated from the river following the crash near the OXO Tower.
The London Ambulance Service said it was called to a stretch of the river, near the South Bank, at 14.20pm and sent two ambulance crews, a hazardous area response team and a duty officer.
Waterloo duty station officer Christine Masson said: "We treated six patients at the scene for a range of minor injuries.
"We treated a teenage boy for a graze to his leg and another boy for shock. We also treated two women for neck pain, one reported to be in her seventies and one reported to be in her thirties.
"We treated another woman, reported to be in her fifties, for knee pain. No patients were taken to hospital."
According to reports, there were 362 passengers on board at the time.
City Cruises issued a statement saying all other passengers were guided off the boat promptly.
"Investigations are ongoing and more information will follow pending its conclusion," it said.
It said the vessel involved, The Millennium Time, will return to Cherry Garden Pier for repair but all other City Cruises services are running as usual.
The company has a fleet of 19 river vessels operating on the Thames as sightseeing boats.
