Police inquiries and unannounced inspections have been carried out at disability care homes in West Sussex.
They were in response to “significant safeguarding concerns” after a number of reported deaths.
The CQC was alerted to Sussex Health Care services by West Sussex County Council.
New placements have now been suspended to eight homes run by the organisation.
Two homes in Horsham were identified by the CQC as homes with “significant safeguarding concerns”. The Laurels in Guildford Road – for young adults only – and Orchard Lodge in Dorking Road, cater for people with complex physical and learning difficulties.