Jonathan Isaby from the TaxPayers' Alliance said taxpayers would "resent" paying for spare rooms for those receiving housing benefits "when they can't have one themselves."
He said: "I'm not saying that there aren't people who do need those rooms but you can't have a blanket exemption for hundreds and thousands of people."
Campaigners against the Government's so-called 'bedroom tax' will take to the streets tomorrow in protest of the proposals.
More top news
Now ISPs will be free to block rival apps, slow down competing services or offer faster speeds to companies who pay up.
Paul Golding was arrested by police in Belfast earlier on Thursday while he was at court supporting deputy leader Jayda Fransen.
One in four people believe recent sexual harassment publicity will affect their work Christmas parties, an ITV News/ComRes poll suggests.