She is known for her roles as George Woodson in the BBC soap opera Doctors, Paula Martin in the ITV soap opera Coronation Street, and Jennifer Taylor-Clarke in the BBC comedy The Office.
[9] Gallacher joined the cast of Coronation Street in August 2018 as Paula Martin, a love interest for established character Sophie Webster (Brooke Vincent).
[10] In February 2020, it was announced that Gallacher had joined medical drama Casualty as police officer Ffion Morgan, the wife of established character Jan Jenning (Di Botcher).
[11] Gallacher confirmed that she would not leave Coronation Street for the new role, but instead would appear in both shows simultaneously.
[13] For her role as Ffion, Gallacher stated that she wanted to appear different to her Coronation Street character, so she wears a wig due to having an allergy to hair dye.