It's five years since BBC Panorama revealed abuse of patients at Winterbourne View private hospital in Bristol, but families of residents say not enough has been done. They have written an open letter to David Cameron, saying the pace of change has been too slow and that patients are still suffering. | BBC Breakfast

Olivia spent over two months secretly filming inside a specialist hospital in County Durham and revealed adults with learning disabilities or autism being mocked, intimidated and restrained. How did she feel going undercover and how did she deal with the abuse she witnessed? | BBC Panorama