Bosses at Derriford Hospital in Plymouth say they are working hard to reduce overcrowding in the Emergency Department.
Inspectors found that 393 patients attended on a single day last month, some of whom were forced to wait on trolleys in cramped conditions due to a lack of beds.
The CQC inspectors said there were not enough available beds in the hospital to allow emergency patients to be admitted to a ward as soon as this was required, resulting in a crowded emergency department with patients receiving care and treatment in unsuitable environments.