Police have released new images of the damage done by a house fire that killed six members of the same family.
They are also releasing a new video of the scene around the time the fire started, to try and get witnesses to come forward.
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A lamp in the tower which houses Big Ben is to be switched off for the first time in more than 70 years.
Sir Bruce entertained audiences for more than seven decades.
Work in the tower will also pause over the bank holiday weekend.