The Prime Minister and his family have escaped to the Spanish Island of Ibiza for a week-long holiday.
According to Downing Street sources, Mr Cameron has been accompanied by a small team of key staff and is being kept up to date on developments in the Woolwich investigation.
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The former deputy prime minister, who lost his Commons seat at last year’s election, will move to Silicon Valley in January.
Officers are attempting to locate the animal, which they believe may be injured.
The court previously heard Cox used his black Ford C-Max to deliberately plough into a crowd outside a nightclub.