Complex sentence: Grade entered the television industry in 1973 when he joined London Weekend Television (LWT) as Deputy Controller of Programmes (Entertainment), rising to the post of Director of Programmes in 1976.
Split into simpler sentences: Grade entered the television industry in 1973 when he joined London Weekend Television (LWT) as Deputy Controller of Programmes (Entertainment). Fitzroy Dearborn, 2004, p.1020 rising to the post of Director of Programmes in 1976.