At least 58 people are dead or missing, presumed dead, following the devastating fire at Grenfell Tower in west London and the number "may increase", BBC quoted the commander Stuart Cundy as saying.
The recovery operation at the burnt-out block of flats has resumed and could take weeks, he said.
Meanwhile, PM Theresa May admitted that support for families in the "initial hours" was "not good enough".
The statement came after Mrs May met volunteers and some of the people made homeless by the fire.
In her official birthday message, the Queen reflected on the "somber national mood" following tragedies in London and Manchester in recent weeks.
She said, in an unprecedented statement, that she had been "profoundly struck by the immediate inclination of people throughout the country to offer comfort and support to those in desperate need".
"Put to the test, the United Kingdom has been resolute in the face of adversity," she said.
A huge fire had raged through the night at a west London tower block earlier on Wednesday and the reason for this fire is still unknown.
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