Malcolm Turnbull has confirmed reports two Australians have been "directly affected by this attack" in London, also confirming the terror threat in Australia is set at probable.
The Australian government has condemned the "shocking" attacks on London and expressed "resolute solidarity" with Britain in support for the victims of twin incidents.
"One case has been confirmed and the Australian concerned is in hospital. In the other case, we are continuing to make inquiries," he said.
"This afternoon the Foreign Minister spoke to the parents of both Australians [and] officials will continue to provide every assistance they can to Australians affected by this shocking attack."