Complex sentence: He did not take to television journalism and left, joining the left-wing newspaper "Daily Herald" from August 1961 he became a television critic for that paper and for its successor, "The Sun" in its pre-Murdoch incarnation.
Split into simpler sentences: He did not take to television journalism and left, joining the "Daily Herald" newspaper. From August 1961 he became a television critic for the "Herald" and its successor, "The Sun" in its pre-Murdoch incarnation.