Complex sentence: He worked as a journalist and the deputy editor of the internal magazine of the Palace of Westminster, "The House Magazine" for a year in 1983, when in 1984 he became a full-time disability rights campaigner for several national charities.
Split into simpler sentences: He worked as a journalist and the deputy editor of the internal magazine of the Palace of Westminster, "The House Magazine" for a year in 1983. In 1984 he became a full-time disability rights campaigner for several national charities.