Two English Defence League leaders were arrested today after attempting to visit the spot where Drummer Lee Rigby was killed.
Tommy Robinson and Kevin Carroll were detained on suspicion of obstructing police as they made their way to Woolwich.
The Metropolitan Police had already banned the march, as Ria Chatterjee reports:
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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.