Magistrate Desmond Nair has returned to court after a brief adjournment, and is outlining the considerations he must take into account when making his decision.
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Claire Lomas was greeted by cheering supporters after walking through the night to make it to the finish line.
The boy matches no missing persons profile and police say they have yet to find any clues as to his identity.
The prime minister told MPs she was hopeful 'sufficient progress' would be made to move talks on to trade by December.