Downing Street has insisted David Cameron followed all the "proper processes" after it emerged his family's Nepalese nanny has been granted British citizenship.
Questions were raised about Mr Cameron's use of foreign domestic help after a minister deplored the effects of the "metropolitan elite" using cheap migrant workers.
Home Office minister James Brokenshire said yesterday the wealthy had been the main winners from Britain's openness to labour from abroad, because they had to pay less for tradesmen and services.
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The cash-in-transit van was reportedly abandoned on a leafy south London street on Tuesday morning.
Protesters also climbed on top of a Docklands Light Railway train at Canary Wharf station.
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