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By 1980, Morris had completed his career change to dedicate his working life to TV producing. He helped create the highly successful and long running hospital drama Casualty (which has been on air since 1986) and contributed to the series for its first four seasons before leaving at the end of 1989. He also produced 12 episodes of the police drama The Bill during 1989, and his final contributions to television production were Wycliffe and Summer of Love, both of which were aired in 1997.
Geraint Morris died in July 1997 as a result of lung cancer. He was 56 years old.
When the BBC series Casualty built a new set, one ward was named after Morris as a tribute to him and was first seen in the episode broadcast on 7 January 2012.