RTD's 1997/1998 series The Grand is set in a Manchester Hotel in the 1920s. One of the long term guests is Esme Harkness, a retired prostitute/madame with the proverbial heart of gold. She just might be a distant relative of Jack's.
She is not to be confused with the other Esme Harkness from Russell's dark 1993 children's series Century Falls. Esme and Alice Harkness apparently were straight-laced sisters who ran a shop and worked against all the demon-raising that was going on in the town. If that weren't enough, Mary Wimbush, the actress who played Esme in Century Falls, played Aunt Lavinia in the only other Doctor Who spinoff: K9 and Company. Coincidence? I think not.