Complex sentence: Gilliatt was married to playwright John Osborne from 1963 to 1968, living at 31 Chester Square (London) in a house designed by architect Sir Hugh Casson.
Split into simpler sentences: Gilliatt was married to playwright John Osborne from 1963 to 1968. Gilliatt and Osborne lived at 31 Chester Square; the house was designed by architect Sir Hugh Casson.