A man who fell asleep on the banks of the Thames rolled into the river and had to be rescued by a lifeboat crew.
The crew picked up the man who was stranded on the north foreshore of the Thames, near Blackfriars Bridge in central London, early on Saturday.
A Royal National Lifeboat Institution (RNLI) helmsman said the man must have lain down and fallen asleep on the embankment wall before he fell in.
He was standing when the crew reached him and had no serious injuries.
Tower lifeboat helmsman Kevin Maynard said: "We quickly located the man who told us he had lain down on the embankment wall and must have fallen asleep because the next thing he knew, he was falling through the air.
"He said he landed in the river and then managed to get out on to a bit of exposed land.
"We took him back to Tower lifeboat station, next to Waterloo Bridge, where we handed him into the care of the London Ambulance Service."
Lifeboat station manager Janet Kelly said: "We would really urge people to take care in and around the River Thames.
"It can be enjoyed safely as long as people treat it with respect and I would certainly advise people not to fall asleep on the river wall."