[1] During her teenage years, she got involved in drama and music activities through school and joined a local amateur dramatics group called the Oakgrove Theatre Company.

Other film appearances include Mary Reilly (1996), Divorcing Jack (1998), Thunderpants (2002), Skagerrak (2003), Tristan & Isolde (2006), Last Chance Harvey (2008), Sherlock Holmes (2009) and Grabbers (2012).

[citation needed] Gallagher's first album Precious Soul was released in 2004 on the Salty Dog Records label and was produced by John Reynolds.

She played Trisha Meehan in The Field of Blood and Ada Mason in Agatha Christie's Poirot Series 10 episode "The Mystery of the Blue Train".

[8] The image includes her The Commitments co-stars Angeline Ball as Imelda Quirke, Maria Doyle Kennedy as Natalie Murphy and Robert Arkins as Jimmy Rabbitte.