Complex sentence: He was Headmaster of Bradfield College, England, between 1955 and 1964 and, whilst there, he held the office of Justice of the Peace (J.P.) for Berkshire in 1960.
Split into simpler sentences: He was Headmaster of Bradfield College, England, between 1955 and 1964. He held the office of Justice of the Peace (J.P.) for Berkshire in 1960.