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.
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Thousands of runners dressed as Santa Claus have jogged through a London park to raise money for Great Ormond Street Hospital (GOSH).
Expect a dry and mostly sunny day with only small amounts of cloud at times to a maximum Temperature of 8C.
The Foreign Secretary was unable to rule out the possibility of continuing to pay money into the EU when he spoke to Peston On Sunday.