Actor Jude Law has said he is "exercising" his right to "peacefully protest" as he joined 800 people at a vigil condemning charges of piracy against 30 Greenpeace activists in Russia.
Law, whose children went to school with detainee Frank Hewetson, said:
What is ludicrous is that they have been charged with piracy which has a threat of 15 years in prison.
Of course I am worried about Frank because I care about his family and I care about him but I know that he is incredibly durable.
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The operation to recover the unexploded bomb near the Houses of Parliament let to disruption in central London overnight.
Southern parts of England and Wales will see sunny skies after a frosty start.
A police spokesman said the incident in the Bourke Street Mall on Friday was not related to terrorism.