A BAFTA award-winning film maker has said his latest feature-length documentary is all about winning justice and compensation for the tens of thousands of people scammed by big banks.

Samir Mehanovic – whose previous films include Fog Of Srebrenica, about the massacre of Bosnian Muslims by the Serbian military, and Through Our Eyes, which follows a group of Syrian refugees to their new life in Europe – has turned his attention to financial institutions such as RBS and Lloyds in his latest work, Spank The Banker.

It follows the stories of six ordinary individuals who fought against Britain’s financial system and the legal and political tricks the big banks use to crush opposition.

The films details how the banks get away with fleecing their customers. Mehanovic said: “My films are about exposing injustice while giving the victims the dignity of speaking for themselves.

“But not all injustice takes place abroad. Since 2008, more than 100,000 small businesses in the UK, Europe and America have been deliberately looted by the big British banks and their corporate lawyers.”

The film’s co-producer George Kerevan, the National columnist, former MP and member of the Commons Treasury Select Committee, said: “Assets have been stolen through fraudulent lending, falsified documentation and financial manipulation.

“Experts reckon £100 billion has been looted which makes it the biggest heist in history. Yet the regulatory authorities do nothing.

“Spank The Banker is going to send the culprits to jail.”

The film premieres on Tuesday in Committee Room 14 at Westminster.