Complex sentence: Dixon's most notable role was in the 1981 BBC TV series "The Hitchhiker's Guide to the Galaxy" in which he starred as Ford Prefect, he also received critical acclaim for his portrayal of Ariel in the 1980 BBC version of "The Tempest".
Split into simpler sentences: Dixon's most notable role was in the 1981 BBC TV series "The Hitchhiker's Guide to the Galaxy" in which he starred as Ford Prefect. He also received critical acclaim for his portrayal of Ariel in the 1980 BBC version of "The Tempest".