Malaysian Prime Minister Datuk Seri Najib Razak said that construction at the Battersea Power Station was a "shining example" of what the UK and Malaysia could do together.
Malaysian investors bought the 39-acre site by the Thames it is now set to become a prestigious residential and shopping development. Mr Najib told David Cameron today: "It is a shining example of what we can do when we get together. We are partners for prosperity."
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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.