A leading free market thinktank claims Ed Miliband's pledge to cap rent rises in the private sector "defy economic logic" and will end up harming the poor.
Mark Littlewood, director general of the Institute of Economic Affairs, said the proposal to make tenancies three years long might "lead to landlords being uncooperative in the hope that tenants leave early".
He claimed the "key factor" in high rents was a shortage of housing and called on politicians to reform "draconian planning laws" to boost supply.
More top news
The unexploded bomb was found near the Houses of Parliament and led to disruption in central London overnight.
Southern parts of England and Wales will see sunny skies after a frosty start.
A young child is among three deaths caused by a man who deliberately drove into crowds of people in the city centre of Melbourne.