The future of funding for care homes has been called into question, with one expert warning more could go to the wall.   It comes after BBC Wales obtained figures showing the gap in how much councils are prepared to pay - is growing. Our research shows that one council is spending £145 per person less on care every week than the highest spending authority. Care home providers say their basic costs aren’t being met and some are turning to the courts. BBC Wales health correspondent, Hywel Griffith reports.