A 20-year-old charity fundraiser from Bermondsey died following an argument in a late-night hot-spot near Tower Bridge in the early hours of Sunday.
More than 150 friends and family of Tommy Blackmore walked to the bridge where the body was found on Sunday in tribute the “well-loved and hugely popular” lifelone Millwall supporter.
A 28-year-old man remains in custody, arrested on suspicion of murder.
The Metropolitan Police said a 34-year-old man and a 21-year-old man, arrested on suspicion of causing grievous bodily harm, were bailed pending further inquiries. Another man was released.
Police were called to Queen Elizabeth Street and found Tommy with critical injuries. He was taken to hospital but pronounced dead at 3.45am.
Tommy, who had helped raise £32,000 for Cancer Research UK, was described by his family as “a loving and fiercely loyal son, brother, uncle and friend”.
“He made an impact on and had time for everybody who crossed his path. A vibrant character, cheeky, charming, comical and wise way beyond his 20 years.”
“He was a well loved and hugely popular boy, which has been demonstrated by the sheer number of people who have left a sea of flowers and tributes, both at his family home and at Tower Bridge.
“Tommy has been summed up by the thousands of comments left on social media in the last 36 hours which have all been positive and described him as the harmless and fun character that he was.
“The respect and love that has been shown is usually reserved for someone much older and is a testament to what a terrible loss has been suffered.”
Det Chief Insp Rebecca Reeves said: “The area around Tooley Street has a popular nightlife and I would ask that anyone who had been to a club in the area and may have witnessed the assault to contact us.”
Anyone with information is asked to contact the police incident room on 020 8721 4868, or Crimestoppers, anonymously, on 0800 555 111.