A second Australian has been confirmed dead following the London Bridge terror attack.
Foreign Minister Julie Bishop made the announcement in a statement on Wednesday.
"The Australian Government is deeply saddened to confirm that two Australians have been killed in the London terrorist attack," a statement from the Foreign Minister said.
The names of the two victims have not been officially released, although the family of one - nurse Kirsty Boden, 28, from South Australia - has confirmed her death.
She was among seven people who died in the attack on London Bridge and nearby Borough Market on Saturday night local time (Sunday AEST)
The Boden family, in a statement released on Tuesday night, said Kirsty was running to help victims of the stabbing and van attack when she was fatally injured.
"As she ran towards danger, in an effort to help people on the bridge, Kirsty sadly lost her life," they said.
"We are so proud of Kirsty's brave actions which demonstrate how selfless, caring and heroic she was, not only on that night, but throughout all of her life. Kirsty - we love you and we will miss you dearly."
It was unclear if Ms Boden was hurt when three men used a van to run down pedestrians on the bridge or when they went on a stabbing rampage in a nearby market.
"Kirsty was loved and adored by her family, friends and boyfriend," the family statement read.
"She was the most outgoing, kind and generous person who loved to help people. Helping people was what she loved to do in her job as a nurse and in her daily life."
The family, from Loxton in SA's Riverland region, asked for "the privacy we need to grieve away from the public eye".
Ms Boden worked in the theatre recovery ward at Guy's and St Thomas' Hospital which said she was a "one in a million" nurse who "always went the extra mile for the patients in her care".
SA Premier Jay Weatherill offered his condolences saying "Kirsty's death brings the horror of terrorism closer to home for all of us".
"It's the random nature of this heinous crime which makes it so hard to fathom," he said in a statement.
Australian authorities are working with UK police to determine what happened to Brisbane woman Sara Zelenak, still missing after being separated from friends on London Bridge during the attack.
A Facebook post by a family friend shared hundreds of times on Monday appealed for information about the 21-year-old, saying she usually rang her mother daily.
The three terrorists were quickly shot dead by police.
