Boris Johnson has bowed to pressure by cutting short his holiday as rioting escalates across the capital.
The London Mayor is following Home Secretary Theresa May by abandoning his break abroad.
The move comes despite Mr Johnson's aides previously insisting he could deal with the burgeoning crisis remotely as if "he was sitting in his office".
Deputy Prime Minister Nick Clegg has denied that the absence of senior figures is hampering the Government's response to the violence and stock market crash.
Mr Clegg returned to work this morning after a holiday, while David Cameron is away in Italy and Chancellor George Osborne is in the US.
There is no sign so far that the Prime Minister intends to come back to Britain early, despite criticism from Labour.
A spokesman for the Mayor said: "He is interrupting his family holiday to return to London. He will be back in London tomorrow lunchtime."