Big Buoy and Prime Focus London are among the companies to have completed work on Cut, a two-minute long charity film made by Grey London for Women's Aid.

Starring Keira Knightley, the cinema and TV spot (pictured) is designed to raise awareness of domestic violence and was put together by a 50-strong crew who all gave up their time for free.

Big Buoy's Emily Irvine provided Flame work while Prime Focus London's Tareq Kubaisi did the grade.

Other companies involved in the project include Scramble, LipSync, Pinewood Studios and Skywalker Sound.

The film was directed by Joe Wright and shot by cinematographer Seamus McGarvey.