A witness said the boat that crashed into Westminster Bridge in central London sounded like a “car crash”.
Enno, a 19-year-old German tourist who wished to keep his last name private, said he was walking over the nearby Hungerford Bridge when he heard a “crashing sound”.
He added: “A black boat had crashed into the side of the bridge by the pier. I think around five police officers were in the water, at the same time.
“They looked hurt.”
He said that emergency services then rushed to the scene and urged people to “stay away”.
He added: “It sounded like a car crash from around 10 metres away.
“I had seen the black boat pass under the bridge and once I heard the sound, I saw that it had crashed.”