johnny timpson was the uk's first disability ambassador. the department for work and pensions to claw back overpaid benefits was "devastating" for vulnerable families. our correspondent ben woolvin reports. johnny timpson has dedicated much of his life to helping others. this is him two years ago, being awarded an obe for services to disabled people. he is now giving up his role as a dementia champion to make a point about what he says is a crisis in the making. when you are limiting a neurological condition, that is a big, caring, heavy ask. that carer has a lot going on in their life. the last thing that they are probably able to get their head around is the complexity of their benefit entitlement. his complexity of their benefit entitlement.— complexity of their benefit entitlement. , ., . entitlement. his main concern unpaid carers being — entitlement. his main concern unpaid carers being told _ entitlement. his main concern unpaid carers being told told _ entitlement. his main concern unpaid carers being told told to _ entitlement. his