A temporary wooden footbridge has been built at St Johns in Deptford, where residents claim they endured four days of Christmas misery. Network Rail admits work to replace the original bridge has been delayed by "unforeseen complications" and high winds.
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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.