Ten per cent (5.8 million) of people provided unpaid care for someone with an illness of disability.
Over a third (37 per cent, 2.1 million) of those people were giving 20 or more hours care a week.
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German news agency dpa reported that prosecutors decided to seek Mr Stadler’s arrest due to fears he might try to evade justice.
David Dimbleby is stepping down after 25 years presenting the BBC show.
British Transport Police (BTP) were called to Loughborough Junction station in south London at 7.30am on Monday.