Just to warn you that you may find it is v difficult to get continuing care NHS funding, whatever the criteria may appear to say. Especially in the current financial climate.
My mother, 94, with vascular dementia, was admitted to hospital because she was refusing to eat or drink. Up till then, she was being cared for at home by visiting LA carers, four times a day. (Partially self-funded, her attendance allowance covered the shortfall.) After some time on a drip to rehydrate her, she continued to refuse anything by mouth and was put on the Liverpool Care Pathway, with our full consent. She had made up her mind, what was left of it, to die. The drip was removed and she was given morphine to help ease any painful symptoms.
Even at this point, the hospital wanted to move her to a nursing home and the NHS and her Local Authority had a dispute over who would pay for her care. The Continuing Care assessor met me at the hospital and told me she did not meet the criteria. (She was bedridden, couldn't stand unsupported, sleeping most of the time.) The LA would be responsible for the cost of the nursing home for 12 weeks and then we would have to sell her house. When I said she was not eating or drinking and would die soon, she said, "But she might change her mind". The LA challenged the decision and 3 days after her death, I got a letter to say she would be entitled to Continuing Care. (All very distressing, because obviously I wanted to concentrate on my dying mother, not to have to have a row with bureaucrats over money.)
I have read of cases in the press where patients severely disabled after a stroke have been refused CC, or only received partial funding for strictly medical procedures, most of the bill having to be paid by the patient.
If he needs a nursing home, then that is obviously what he should have, regardless of finance, but, from what you have said, you're likely to have a battle on your hands regarding funding, which will be much more expensive than his current home. If they are prepared to continue caring for him, then that is what I'd push for.