A three day inquest opens today into the death of an 82 year-old man who died at Withybush Hospital two years ago.
Malcolm Green's family say he became increasingly unwell after undergoing surgery for bowel cancer in June 2012.
They say staff failed to notice the deterioration in his condition and that he died of internal bleeding and organ failure because the surgeon who was supposed to be treating him left to go to a meeting.
The hospital have admitted "avoidable and unacceptable delays" in his treatment.
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A group of ex-servicemen have become the first people to climb Pen y Fan in the Brecon Beacons for 24 hours non-stop.
Thousands of athletes are in Tenby for the competition which consists of a two mile swim, a 112 mile cycle ride and a marathon.