Ipso Facto were an English goth-inflected, melodramatic psychedelic rock band. Founded in 2007 by Rosalie Cunningham (Singer, Songwriter, Guitar), Victoria Smith (Drums), Cherish Kaya (keyboards) and Samantha Valentine (Bass guitar). They were based in London but individually originated from different parts of the UK, including Southend, Newcastle and Bedford. Before Ipso Facto, Rosalie and Samantha played in the Southend band Theoretical Girl.

Ipso Facto appeared on the 'BBC Introducing Stage' at the Reading Festival 2008, and supported The Last Shadow Puppets on their 2008 tour.