According to research done for the BBC
In the last two years the total number of businesses in the capital fell by 1% which doesn't sound that bad until you look at the analysis by borough.
London Borough of Hounslow is at the bottom of the table of London borough, with the biggest fall in business number.
Some 3,169 companies were lost through insolvencies, relocations and closures - amounting to 17.5% of the total number of firms there.
Ruth Cadbury, Hounslow Council's deputy leader, said: "We have some major corporations based in the borough, but the majority are small businesses, which form a vibrant part of our community.
"The economic downturn has been challenging for them and there's no doubt local traders are finding it hard to survive.
"Therefore a key element in our planning around economic development and regeneration for the borough is to continue to work closely with them to provide support."
Peter Hughes, President of Brentford Chamber of Commerce commented "We are not surprised by these findings because the London Borough of Hounslow has themself been one of the most inflexible commercial landlords in Brentford. Also we have found local councillors have shown very little interest in attending our meetings and involving themselves at a local level. Hounslow Council has failed to give any support to Brentford Chamber despite its local involvement with the community for the past 90 years since its inception."
March 22, 2012