https://www.gov.uk/cma-cases/care-homes-market-study
The Cma, the competitive and markets authority is seeking experiences

" We also want to hear from care home residents and their relatives who feel they may have been treated unfairly by a care home, because of concerns about the fairness of a care home’s contract terms or practices. More details including how to report your experiences can be found on our reporting page."
https://www.gov.uk/government/publicati ... -care-home

Note this is about the 'market' not specific complaints or Cqc matters