Complex sentence: Beginning his career in the commercial sector with Courages, the brewers, he then moved in 1971 to the National Council of Social Service where he became, in 1974, head of social services at the Royal National Institute for Deaf People.
Split into simpler sentences: Beginning his career in the commercial sector with Courages, the brewers, he then moved in 1971 to the National Council of Social Service. He became, in 1974, head of social services at the Royal National Institute for Deaf People.