Boris Johnson says he takes "full responsibility", saying: "We truly did everything we could."
Some people may not be able to return home for months after a mine blow-out caused flooding.
Campaigners claim changes to the way decisions were made led to a "shocking" fall in cases reaching court.
The Met says it was a "poor decision" to hire a barber to give cuts to 31 officers in the workplace.
Police footage shows a party of people and children celebrating in a house in east London on Sunday.