Michael Schumacher is "making progress" and "showing moments of consciousness and awakening," his agent has said.
The racing driver, who suffered a severe head injury while skiing off-piste in the resort of Meribel in France last December, remains in an artificially induced coma.
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The Prime Minister will urge leaders of the other 27 EU states to move on as quickly as possible to talks on Britain's future trade.
Despite temperatures reaching double figures in the south today, it was still a chilly day, with brisk winds.
The four-time Tour de France winner has said he has always taken great care to stay within the rules after returning an adverse urine test.