Just after 9pm a woman, in her 50s, was seen at the London Eye in choppy water, next to the tourist path near Westminster Bridge.
Witnesses told the London Evening Standard how a man attempted to save her after jumping in but the pair were left hanging over the waves and holding onto the metal pier underneath the Eye.
The Marine Policing Unit were unable to pull up close enough to the pair and one officer tied a rope around himself before jumping in and swimming towards them.
Officers held onto the rope as he swam the pair back to safety on the boat and the woman was taken to hospital.
The dramatic rescue was quickly followed by another, when a man, in his 20s, fell into the river from Waterloo Bridge.
Port of London Authority staff arrived to throw a lifebuoy and, along with a police boat, brought him to shore where he was taken to hospital by the London Ambulance Service.
A Met spokesman said The Marine Policing Unit (MPU) responded and found the man had been stopped from being carried away by the current by a Port of London Authority boat.
“Officers on the MPU boat with the assistance of an RNLI lifeboat were able to recover the man from the water,” he said.
A London Ambulance Service spokeswoman said no one suffered serious injuries during the incidents.
The RNLI said it had also been called out to the Thames Barrier near Woolwich during the night after a man threatened to jump into the river but the situation was dealt with and the man required no further help.
RNLI spokeswoman Amy Caldwell said: “It’s been a very busy night on the Thames, it’s quite unusual for there to be so many call-outs.”
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