The government are undertaking an independent review into the impact of the "bedroom tax" amid criticism from MPs and the public that a thorough impact assessment was not conducted before the sweeping benefit changes come into force.
Deputy Prime Minister Nick Clegg said the review, which was announced by Iain Duncan Smith in March, would help to understand the "impact" of what the government calls the spare room subsidy:
I have seen lots of widely different figures being cited about the impact of this policy - that is why we are commissioning independent research to exactly understand the impact of this.
I suspect it varies enormously between one part of the country and another, and one local authority and another. That is why we are trebling, as I say, the resources we are making available to local authorities.