An Oxford hospital has been told to make improvements after an inspection found areas of concern.
Care Quality Commission (CQC) inspectors said John Radcliffe Hospital in Headington was "failing to plan and deliver care" to patients in A&E and highlighted staff shortages.
Oxford University Hospitals NHS Trust's other hospitals were rated as "good".
Sir Jonathan Michael, trust chief executive, said they would strive to improve.
The report said that although many of the services at John Radcliffe Hospital were good, it required improvement overall.
The health watchdog said staff shortages in the maternity department, on surgical wards and in operating theatres meant that staff could not provide the best care at all times.
It added patient records were not being completed in some areas of the hospital.
Sir Jonathan said: "They visited on one of the busiest days of the year - in terms of the emergency department - and they identified that perhaps patients were not always being given the privacy and dignity they ought to have.
"They also commented on delays in getting operations done.
"The reality is, of course, that healthcare systems can never be perfect," he added.
"We can always be striving to improve and that is exactly what we will be doing."
In February, a team of 51 inspectors visited the trust's four hospital sites, which includes Oxford's Churchill Hospital, the Nuffield Orthopaedic Centre and Horton Hospital in Banbury.
There were also two unannounced spot checks in March.
Across the four hospitals, inspectors noted caring, compassionate staff and said that services were "innovative and professional".