Johnston was born on 7 December 1943 in Warrington and grew up in Prescot, both in Lancashire.[2] She is the daughter of Fred and Margaret Jane Wright (née Cowan).[citation needed]
Johnston made her television debut, aged 38, with a minor recurring role on Coronation Street in the summer of 1982, playing the role of Mrs. Chadwick, the wife of a bookmaker.[4]
From 1982 to 1990, she appeared as Sheila Grant in the soap opera Brookside. She appeared in the show's debut episode on 2 November 1982 – broadcast on the first day Channel 4 went on air – and her last episode was aired in September 1990, when the character was written out of the series following her divorce from Bobby Grant (Ricky Tomlinson) and remarriage to Billy Corkhill (John McArdle).
Since then she has appeared in many drama series and films, including Inspector Morse, Hetty Wainthropp Investigates, Brassed Off and My Uncle Silas. In 1992, Johnston appeared in the three-part award-winning drama Goodbye Cruel World, in which she portrayed a woman coming to terms with a muscle-wasting illness.[5]
Johnston played Barbara Royle in the BBC comedy series The Royle Family, appearing from 1998 until 2012, with her former on-screen husband in Brookside, Ricky Tomlinson.
From 2000 to 2011, she starred in the television series Waking the Dead, in which she played the role of psychological profiler Grace Foley, alongside Trevor Eve.[6]
In 2004, she appeared in one episode of the series, Who Do You Think You Are?, in which she traced her family tree.[7]
She starred in Jennifer Saunders's comedy drama Jam & Jerusalem on BBC One, alongside Joanna Lumley, Maggie Steed and David Mitchell. The first series aired in 2006, the second series began on New Year's Day 2008 and the third in August 2009. Also in 2008, she played Affery Flintwinch in the BBC adaptation of Little Dorrit. In May 2008 it was confirmed Johnston would return as Barbara Royle for another episode of The Royle Family, which aired on Christmas Day 2008 on BBC One.[8] The show returned for further Christmas specials in 2009, 2010 and 2012. She shared a role with Billie Piper in the television adaptation of A Passionate Woman which aired on BBC One on 11 April 2010.[9]
On 2 April 2012, Coronation Street series producer Phil Collinson announced Johnston had joined the soap opera as Gloria, the mother of Stella Price (played by Michelle Collins). She made her first screen appearance on 5 September 2012.[10] It was announced in June 2013 that Johnston would leave the soap opera in 2014 to pursue other acting roles.[11] She departed on 21 February 2014.[12]
In December 2011, she played Eileen Lewis in the BBC one-off drama Lapland, a role which she reprised in 2013 for a series, Being Eileen.[13][14]
In May 2014, it was announced that Johnston would guest star in the fifth series of the period drama Downton Abbey. She played Denker, a lady's maid to the Dowager Countess, played by Dame Maggie Smith.[15]
In 2018, Johnston played Ivy-Rae in the BBC drama series, Age Before Beauty[16] and in August 2019, she played Joan in the second series of Hold the Sunset.[17]
In 2022, she appeared in the Channel 5 series Witness Number 3.[19][20] In the same year she reprised her role as Denker in the film Downton Abbey: A New Era.[21]
In 1967, she married her first husband Neil Johnston and became pregnant at the age of 24. She suffered a miscarriage shortly after and the couple later divorced but she kept his surname as her professional name.[23] She has one son, Joel, from her second marriage to David Pammenter.[24] She has two grandchildren.[25]
In 1989 Johnston, assisted by Lesley Thomson, published her first book, a memoir titled Hold on to the Messy Times.[27] In 2011, she published another memoir titled Things I Couldn't Tell My Mother.[28]
In her autobiography, Things I Couldn't Tell My Mother,[30] she states that she was originally going to be called Margaret Jane Wright, after her mother and grandmother, but her father thought that it would be best to call her Susan.
^"Never larger than life: Ruth Rolands meets the Brookside star and gay rights campaigner". Gay Times (131). Millivres. August 1989. ISSN0950-6101. The dangers of that Clause [28] really hit me and I felt angry. I've got to come in on this, I thought – so I did. That's when I 'came out' as an ally of gays.
^Johnston, Sue, 1943– (1989). Hold on to the messy times. London: Pandora. ISBN0-04-440497-2. OCLC20088841.{{cite book}}: CS1 maint: multiple names: authors list (link) CS1 maint: numeric names: authors list (link)
^Johnston, Sue, 1943- (2011). Things I couldn't tell my mother : a memoir. London: Ebury. ISBN978-0-09-193889-5. OCLC752824495.{{cite book}}: CS1 maint: multiple names: authors list (link) CS1 maint: numeric names: authors list (link)