The team leader for the inspection at Royal Wolverhampton Hospitals NHS Trust has said the main issue for the team was staffing levels.
Debbie Widdowson, from the Care Quality Commission, added that midwife levels were not as high as they should be.
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West Midlands Fire Service have advised residents to keep their windows shut as they try to contain a leak of hundreds of litres of ammonia.
Rain easing tonight.
Cloudy with some showers at first, drier by dawn.