By Vivienne Aitken & Susie Beever One of the biggest care home firms in the UK has cut three NHS-funded dementia units leaving families floored and fearing for their loved ones. Three specialist units have been axed by HC-One Scotland, with families told they were “no longer fit for purpose”. Families on Thursday said they’d been “floored” at the news and that many now feared what to do. The care company, which looks after people with advanced dementia, told people on Wednesday through a letter that was in residents’ best interests to close the units in Milnwood, Mossend and Orbiston, all in N…