The RNLI caught a man just as he fell into the river after they found him clinging to the railings near the Angel pub in Rotherhithe.
They have released video of the dramatic rescue which took place just after 7pm last night.
The RNLI were called by the London Coastguard after passers by spotted the man on the wrong side of the railings. As they approached, he slipped from the ledge and was left clinging to the handrail as his legs became caught in chains along the embankment wall.
A lifeboat rescuer caught the man just as his arms gave way under his weight.
Five girls who were banned by a High Court judge from going abroad after they showed an interest in travelling to Syria were from the same Bethnal Green school as the three girls who fled there.
Kadiza Sultana, Shamima Begum, and Amira Abase were pupils at Bethnal Green Academy. They went missing from their homes in February and it later emerged that they had travelled to Syria to join Islamic State.
The High Court took the passports away from the five other girls earlier this month. It has barred them from being identified.
21 firefighters are currently trying to put out a blaze in the kitchen of a restaurant on Shaftesbury Avenue.
London Fire Brigade said they were called just after 12.20 this afternoon and sent four fire engines to the scene. It is not yet known what caused the fire and whether anyone has been injured.
There is heavy traffic in the area because of the fire and motorists are being warned to avoid the area if at all possible.
South East Coast Ambulance service said that eleven people had to be taken to hospital after the school coach crash in Staines this morning.
One person suffering back injuries was taken to St George's Hospital, while ten others with more minor injuries were taken to St Peters Hospital.
A further 58 passengers were assessed at the scene but did not need hospital treatment.
Jailing paedophile priest Father Anthony McSweeney at Southwark Crown Court today, the judge said that even though he had not touched the victim himself, he had encouraged it and posed a risk of 'serious harm' to children.
He abused the boy along with his friend John Stingemore, who was found dead weeks before his trial.
Surrey Police said Chertsey Lane at the junction with Riverside Drive and Chertsey Lane roundabout are both closed while the emergency services deal with the incident.
The road is expected to remain closed for a significant period and motorists are being advised to avoid the area if possible.