The Court of Appeal has ruled that the so-called bedroom tax discriminates against a domestic violence victim and the family of a disabled teenager. The ruling followed legal challenges by a woman who has a panic room in her home, and the grandparents of a 15-year-old who requires overnight care. The removal in 2013 of what the government calls the spare room subsidy cuts benefits for social housing tenants with a "spare" room. Ministers have said they will appeal. The Department for Work and Pensions (DWP) argued that it had given councils money to make discretionary payments to people facing hardship because of the policy change. The case is now due to be decided in the Supreme Court. Prime Minister David Cameron said the government would "look very carefully" at the judgement. "But our fundamental position is it is unfair to subsidise spare rooms in the social sector if we don't subsidise them in the private sector."