Exclusive: Nursing union says it continues to receive complaints about low pay, unfit housing and illegal fees

Ministers are dragging their heels on an investigation into the mistreatment of migrant carers, the country’s largest nursing union has said, as it continues to receive complaints about low pay, substandard accommodation and illegal fees.

Nicola Ranger, the general secretary of the Royal College of Nursing, has written to Yvette Cooper, the home secretary, to urge her to speed up her promised investigation into the abuse of foreign care workers.