Disabled adults and families with disabled children are challenging the legality of the Government's so-called "bedroom tax", arguing that it unlawfully discriminates against them.
Lawyers in 10 cases at London's High Court are seeking a ruling that the regulations, introduced on 1st April, "unjustifiably discriminate against housing benefit claimants who are disabled or care for disabled family members".
Outside court protesters gathered in support of the families.
More top news
Declan Donnelly is reportedly tying the knot with his manager partner Ali Astall in Newcastle today.
Warming up in the south but with breezy showers across Scotland today.
BA passengers face tighter curbs on the size of hand luggage as part of inclusive allowances for economy and premium economy travellers.