By Ryan Fahey A major UK hospital has warned that its emergency unit is swamped with patients. The Emergency Unit at the University Hospital of Wales in Cardiff – which is the country’s biggest hospital – is experiencing particular problems, according to the Cardiff and Vale University Health Board. Officials added that the unit is “extremely busy” today (Monday, April 29). In a statement, the hospital said the situation is causing “long waits” and said that people should only attend as an emergency. People with concerns have been advised to contact 111 for any help they may need. The health b…