Housing benefit will no longer cover the housing costs of private renting, workless families with 3 or more children anywhere in London.
For low-income single adults without children, a third of London's boroughs (34%) are unaffordable under the welfare reforms.
Demand for the cheapest properties means that even 13 of London's 19 outer boroughs are unaffordable for families reliant on housing benefit.
More top news
Members of the RMT union will walk out in a row over the role of conductors, causing fresh misery for hundreds of thousands of passengers.
The five year long jail sentence of a London mother held in an Iranian jail has been upheld.
Barnet police are investigating four separate anti-semitic offences in the last two days