Chancellor George Osborne and London Mayor Boris Johnson were at a former gasworks which has been deserted for 40 years to launch the scheme. They say the site in Tottenham can now be built on after they removed planning restrictions to get more homes built quickly.
Fifty thousand new homes will be built, 40% of which will be affordable, housing 250,000 people.
More top news
Anthony Birdee from Deptford in south east London tied the English bull terrier, named Muller, to a post in his garden.
A report warned overcrowded streets could lead to a 'Hillsborough scale' tragedy.
Southern got just one star for punctuality, reliability, seat availability, frequency and value for money.