Folajimi Olubunmi-Adewole, 20, known as Jimi, entered the water at around midnight on Saturday (24 April) after spotting the woman fall.
A passer-by jumped in with him and both the second man and the woman were saved, but Olubunmi-Adewole was tragically swept away and his body was found six hours later.
Paying tribute to Olubunmi-Adewole on social media, Vivek Singh, CEO and executive chef of The Cinnamon Club, said: “We are absolutely devastated and are trying to come to terms with the tragic death of Folajimi Olubunmi-Adewole.
"Jimi, as he was known to everyone The Cinnamon Club, was a much-loved member of the front of house team and we are all reeling from this incredibly tragic news.
"He worked with The Cinnamon Club for over the year and was a diligent, kind and passionate young man, a real team player.
"What he did was a tremendous and selfless act of bravery, to save the life of a complete stranger.
"Our thoughts are with his family and friends at this incredibly difficult time.
"He will be remembered as a true hero.”
A GoFundMe page has been set up to support Olubunmi-Adewole's family and has already raised more than £100,000.
Commenting on reports of Olubunmi-Adewole’s death, Mayor of London Sadiq Khan tweeted that he “was the best of us”.
Khan added: “A true hero of our city who gave his life trying to save another. My thoughts and prayers are with his family and friends at this time of tragic loss.”
To view and donate to Olubunmi-Adewole’s GoFundMe page, click here.