[7] From 2009 to 2014, Banks served as General Counsel and Company Secretary for GlaxoSmithKline Australasia, also taking on the role of Head of Compliance and Risk Management.
The Liberal Party moved to investigate and clarify Banks' citizenship status, as her seat in the House of Representatives was critical to the Turnbull government's one-seat majority.
[10] In August 2018, following the Liberal Party leadership crisis that saw Prime Minister Malcolm Turnbull replaced by Scott Morrison, Banks announced that she would not contest the seat of Chisholm at the next federal election.
"[15][12] Morrison subsequently expressed concern for Banks' welfare, promised to stamp out bullying within the Liberal party,[16] and thanked her for not quitting parliament immediately, so that there will not be need for a by-election for her marginal seat.
[17] Craig Kelly, who was among the first to call for the spill in support of unsuccessful challenger Peter Dutton,[18] criticised Banks' decision in a Sky News interview and defended politics as a "rough-and-tumble game.
"[19] He went on to state that the anti-Turnbull plotters employed "a strategy of bullying and intimidation" and have been "eventually proved to have an incompetence to match their brutality [and are] a disaster for the parliamentary party.
"[19] On 27 November 2018, Banks announced in a speech on the floor of the House of Representatives that she would, with immediate effect, leave the Liberal Party to sit on the crossbench as an independent MP.
[20] On 31 January 2019 Banks announced that she would challenge health minister, and former Liberal Party colleague, Greg Hunt as an independent at the federal election later that year, seeking to win the seat of Flinders.
[23] In July 2021 her memoir, Power Play: Breaking Through Bias, Barriers and Boys' Clubs, was published by Hardie Grant and reviewed for The Sydney Morning Herald by Jenna Price.