Mags Arnold is best known for her collaboration with prolific filmmaker Michael Winterbottom.  They have worked together on six films: The Killer Inside Me (Casey Affleck, Kate Hudson and Jessica Alba) The Trip (Steve Coogan and Rob Brydon), Trishna (Freida Pinto and Riz Ahmed), The Look Of Love (Steve Coogan, Anna Friel, Imogen Poots, Tamsin Egerton), Everyday (John Simm and  Shirley Henderson) and The Trip to Italy (Coogan and Brydon in the sequel). 

Mags entered the UK film industry in 1993 as a trainee sound editor, crossing over to picture editing as second assistant editor in 1994.  She was promoted to first assistant editor in 1995, working on films such as High Fidelity and Captain Corelli’s Mandolin, both under celebrated  editor Mick Audsley.  

In 2000, after numerous short films edited after hours on borrowed feature film equipment, she was offered her first feature film for Working Title: My Little Eye.  It was shot entirely on Sony DVcam, with 30% of its material captured on a domestic DV camera, the kind used for home movies.  It was also the first studio picture in the UK to be cut on Final Cut Pro.  Critically acclaimed, My Little Eye has since become a horror classic, described by one critic as the scariest film since The Exorcist. Mags has since collaborated with the director of My Little Eye, Marc Evans, on Trauma (Colin Firth and Mena Suvari), Snow Cake (Alan Rickman, Sigourney Weaver and Carrie Anne Moss) and on the  feature length documentary In Prison My Whole Life (with Mumia AbuJamal, Noam Chomsky, Mos Def, Snoop Dogg).

Her recent films include Noble (Deidre O’Kane, Sarah Greene, Brendan Coyle and Liam Cunningham) directed by Stephen Bradley, The Confessions of Thomas Quick directed by Brian Hill; and Kepler’s Dream (Holland Taylor, Kelly Lynch, Sean Patrick Flannery and  Isabella Blake Thomas) directed by Amy Glazer.