More than half a billion pounds has been spent by local authorities in London on emergency housing since the general election. Councils have been forced to place people in accommodation, such as hotels and B&Bs, after they presented themselves as being homeless.
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If you've been anywhere near Trafalgar Square today you'll notice something different.
Look closely at this collection of images by photographer Jim Grover and you'll notice there's something missing.
Sir Bernard Hogan-Howe's decision to retire comes after growing speculation about his future and his relationship with mayor Sadiq Khan.