He had worked on the iconic children's programme Rainbow has died aged 76, his manager announced today.
The actor and TV presenter's manager Phil Dale said the star passed away in hospital surrounded by his family.
He was best known as the host of the famous children's show and for playing Detective Constable Scatliff in Z Cars.
Phil said: "It is with great sadness that the family announce that Geoffrey passed away in hospital with his wife, Sarah, and son, Tom, by his side.
"Geoffrey Hayes was an English television presenter and actor, best known as the host of Thames Television's top-rated children's show Rainbow, and for his portrayal of Detective Constable Scatliff in the successful TV Series Z Cars for the BBC.
"The family would like to express their thanks to the many fans over the years as it always gave Geoffrey so much pleasure to know that he and his Rainbow team had given so much fun to TV and theatre audiences over the years.
"There will be no further comment at the moment and it would be appreciated if the privacy of Geoffrey's family is respected at this most difficult time."