(I canvassed other major care providers for their policy on emergency admissions to hospital; shockingly none was willing to guarantee that residents would always be escorted - because that requires a degree of slack in their staffing levels above bare minimum cover, the standard for their budgets. Ask yourself, would it be acceptable for a terminally ill child to be sent alone to ED? No? Then why do providers - charging up to £2,000 per week - believe it to be so for a frail elderly person with severe cognitive impairment or for an adult with learning disability? You won't find that in any glossy sales brochure.)
*Updated @November 2016, August 2017, May 2018.
NB: During 2017 and 2018, this situation escalated further to crisis for the home as a whole (not just my complaint). In May 2018, regretfully I felt I had to move mum out of this once excellent home; it was a huge decision, but thankfully she seems to be settling well into her new home in the same area, due in no small part to some familiar staff who had preceded her there. Continuity of care is paramount for those with dementia and I am optimistic that she will now have that once more. I'll post further on this saga in due course.
Meanwhile, a report into privatised adult social care by Professor Bob Hudson indicates that the detrimental changes I have witnessed in mum's home are common symptoms of the drive among providers to maximise profit by cutting down on their major expense and main budget variable: staff. (See in particular points 12 & 13 on page 9 of the report...)
Part 1: a Good Home