The conduct of nurses at care homes owned by the Castlebeck Group is to be investigated.
The Nursing and Midwifery Council made the announcement following the scandal over care at the Castlebeck-run Winterbourne View in Bristol, which was exposed by BBC Panorama.
The NMC is already looking at the conduct of nurses at Winterbourne View but is extending its investigation to other Castlebeck care homes following a report from the Care Quality Commission. The CQC found 11 out of 23 Castlebeck homes did not comply with its standards.
NMC chief executive and registrar Professor Dickon Weir-Hughes said: “Some registered nurses appear to have forgotten the most basic elements of their professional code of conduct. Nurses and midwives have a professional obligation to challenge poor standards and raise concerns on behalf of those in their care.