A senior doctor at a private hospital in north west London has been convicted of killing a patient.
66-year-old David Sellu was found guilty of gross negligence manslaughter following the death of father of six James Hughes. Mr Hughes died at the Clementine Churchill Hospital in Harrow in 2010.
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The plaque at number 16 Cowley Street in Westminster marks the brown brick Georgian townhouse where Sir John lived for 31 years.
A man reportedly armed with several knives has been arrested in Whitehall on suspicion of planning a terror attack, police have said.
Metropolitan Police officer, Tom Harrison, has been crawling the course since the race began on Sunday morning.