A series of events has been taking place across the capital, with announcements on the tube by Barbara Windsor, and a spitfire in Covent Garden. The Prince of Wales has also added his support to the campaign
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.