London's Olympic stadium has failed to secure its own gold medal, after missing out on the UK's most prestigious architecture prize.
The 80,000-capacity stadium was one of six buildings to be shortlisted for the Royal Institute of British Architects' (Riba) Stirling Prize. But in the end the gong went to a science laboratory in Cambridge.
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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.