The family of an Ilford holidaymaker who died in police custody in Dubai want the Prime Minister to raise the death of their son with the country's president.
David Cameron has already said he'll discuss the case of three Londoners who say they were tortured by police there, during the state visit.
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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.