The Mayor of London, Boris Johnson, said: "Last summer the palpable buzz of this great city was beamed across the globe. Since then London's draw has gone from strength to strength with billions of pounds of international investment and huge regeneration projects continuing apace.
"These fantastic tourism figures not only support new jobs and growth in London's economy but are yet another testament to the Olympic legacy."
More top news
The London boroughs of Southwark, Westminster, Lambeth, Hackney and the City of London were all found to be lagging behind.
An open letter by residents said they wanted to ensure justice is served for everyone on the estate.
The world's first ever 'hole in the wall' was installed in Enfield, north London, on June 27 1967.