Growth in rentals: Room with a tree, yours for £100 a week
The average Londoner is now spending more than half their take-home pay on their rent, leading to fears that many are ending up in homes which are not fit for purpose.
BBC London has been given access to a number of properties deemed unsuitable to live in.
One property in Lambeth, which had a tree growing through a bedroom, was rented out for £100 a week.
Local authorities say a growing number of people are now paying for substandard properties.
Mark Jordan reports.
You can see more on that story on 27 March in Rooms, Rogues and Renters at 1930 on BBC One