(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.
NB: @August 2017, this remains an ongoing situation, having escalated further to crisis for the home as a whole (not just my complaint). I'll post an update further down the line, when there is a degree of stability.
However, 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