Boris Johnson said the Conservatives have "to recognise that the sheer global charisma of London is putting pressure on Londoners."
Addressing delegates at the Conservative Party conference, the London Mayor highlighted that average house prices are now six times average earnings in the capital.
"The pressure is really growing and it's intensifying," he added.
More top news
Two doctors have been charged after a 30-year-old woman died while having an emergency caesarean.
Janet Faal was left badly injured after leaving the house for only the third time in ten years.
More than 100 small business owners say they support Ukip's policies to help small traders in a letter published in the Daily Express.