Around 52,000 properties sold through Right to Buy in London are now let by private landlords. The figures have been released by Labour London Assembly member Tom Copley, and make up 36% of properties sold.
Read more: How the Right to Buy scheme works
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A guarantee from City Hall to bankroll the annual £2-3m bill was a key planning condition imposed by Westminster and Lambeth councils.
Detectives in Westminster are investigating after the man was discovered on the Route 189 bus in Marylebone shortly after midnight.
The plaque at number 16 Cowley Street in Westminster marks the brown brick Georgian townhouse where Sir John lived for 31 years.