Valance became well known for her role as Felicity Scully on the Australian soap opera Neighbours (1999–2002) and later played Nika Volek in Prison Break (2005–2006).

She has become involved in UK and US politics as a prominent supporter and fundraiser for Nigel Farage and Donald Trump.

[11] In 1999 at age 16, Valance was cast in the Australian TV soap opera, Neighbours, as Felicity "Flick" Scully.

[13] Soon after gaining the role she left her Catholic school, "where girls were given detention for wearing make-up or having a hem above the knee.

"[9] She appeared in Human Nature's music video for "He Don't Love You" (November 2000), "in a raunchy shower scene.

[19] In 2004, Valance returned to acting, this time in the United States, appearing in episodes of the television series CSI: Miami and Entourage.

In 2005 Valance returned to music, albeit briefly, when she appeared on Har Mar Superstar's album The Handler singing on the tracks, "DUI", "Back the Camel Up" and "Body Request".

Also in 2006, Valance appeared in the National Lampoon comedy Pledge This!, alongside American socialite Paris Hilton.

In 2009 Valance played Brenda Snow for the video game Command & Conquer Red Alert 3: Uprising.

[30] In 2010, she started dating British property developer Nick Candy, whom she married on 29 September 2012 in Beverly Hills, California.

[34] In February that year, she attended the launch of the new British conservative movement Popular Conservatism, led by former UK Prime Minister Liz Truss.

In a series of clips posted on X (formerly known as Twitter), Valance was interviewed by Christopher Hope of GB News,[35] and was asked about her views on various issues.

[36] Asked about her political views, she said, "I would say that everyone starts off as a leftie and then wakes up at some point after making money, working, trying to run a business, trying to buy a home then realises what crap ideas they all are, and then you go to the right.

[34] A close personal friend of Nigel Farage,[38] Valance said she persuaded him to stand for Parliament in the 2024 general election.

"[40][41] She helped the party raise £1.5 million within days of Farage's return as leader,[42] and has donated approximately £100,000 herself.

[45] In January 2002, Valance dismissed her then-manager Scott Michaelson by telephone, 15 months before his contract was due to expire.

[48] The former Neighbours cast member Kym Valentine also gave evidence that Valance "said she was feeling bad, a bit stressed out, because she was leaving Scott" and that "she said the solicitors for her record company would get her out of the contract and would be faxing him the paper work (from the UK) to do so.