In the same year he announced his retirement .
Goolden 's last role was on radio as Zaphod Beeblebrox IV in The Hitchhiker 's Guide to the Galaxy , broadcast in January 1980 .
In the same year Goolden announced Goolden 's retirement .
Goolden 's last role was on radio as Zaphod Beeblebrox IV in The Hitchhiker 's Guide to the Galaxy , broadcast in January 1980 .