As well as these novelisations, five books were separately published, again by Sphere Books, with each being the biography of a main character before the series started. "Rose's Story" was written by Terence Brady & Charlotte Bingham and published in 1972. The following year, Mollie Hardwick's "Sarah's Story" and Michael Hardwick's "Mr Hudson's Diaries" were both published. "Mr Bellamy's Story", by Michael Hardwick, was published in 1974 and "Mrs Bridge's Story" by Mollie Hardwick was published in 1975. Also in 1975, "The Upstairs, Downstairs Omnibus", featuring all five slightly edited stories, was published.