London based anti-racism campaigner Suresh Grover was outraged to receive a text from the UK Border Agency telling him he had no right to remain in the country, despite having a British passport and having been here since 1966.
His case follows a spate of similar complaints - as Ronke Phillips reports.
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Pictures of today's events unfolding following a major security incident at the Houses of Parliament.
At least two people have died after a knifeman brought terror to the heart of Westminster.
The Cobra committee brings together government ministers with senior officials of the emergency services and security agencies.