While at North Lake Senior High School he developed an interest in photography from Daniel, his photolithographer father, supported by then teacher at NLSH, John Longley (a future crew member of the successful 1980 America's Cup challenger, Freedom).

Sadler began working in the film industry in 1986, first as a production assistant on Shame, directed his former tutor Steve Jodrell.

Their first product, "Helios",[13] an early Apple iOS application for filmmakers to pre-visualise the effect of sunlight on locations and people, was released in 2008.

[16] The system is in wide use, notably by camera operator Jim McConkey [17] with cinematographer David Mullen on the television series The Marvelous Mrs.

From February 2014 until June 2018 Nic was a co-host on over 200 episodes of the political podcast From the Bunker [26] with Richard Beatty, David Schockett and Jody Hamilton, daughter of Carol Burnett.