I read that it is quite common that people are being ofered support packages where the Nursing side is funded under Continuing Health Care and the 'Social Care' is funded under means tested Social Care provided by the Social Services.
This is not legal for two reasons.
First the Coughlin case where the Judge stated that where the is a primary health need all care must be provided by the NHS. This is now law because it is case law.
Secondly in the Continuing Health Care "Decision Support Tool" Glossary states:
“…where a person lives in their own home, it means that the NHS funds ALL the care that is required to meet their assessed health and social care needs.”
(Decision Support Tool Glossary, Page 50, last paragraph).
Split care is not lawful.
If you are in this situation you might consider an appeal citing these grounds to the Continuing Health Care Group. (NHS).