Nagesh Kukunoor's Lakshmi explores the journey of a girl who was kidnapped, forced into prostitution, rescued, fought back and won.
Nagesh Kukunoor has also written the screenplay for Lakshmi.
Lakshmi has already won Mercedes-Benz Audience Award for Best Narrative.
Lakshmi features Monali Thakur as Lakshmi.
Shefali Shah, Ram Kapoor, Nagesh Kukunoor and Satish Kaushik also star in Lakshmi.
Lakshmi - Nagesh Kukunoor's hard-hitting drama on child trafficking in the country - will open the 2014 edition of the London Asian Film Festival (LAFF).
Lakshmi will have its European premiere at LAFF, a celebration of independent South Asian arts and cinema across London as the gala returns for its 16th year June 1-14.
The film is based on the real-life story of an impoverished 14-year-old girl kidnapped from her village in Andra Pradesh and forced into prostitution and who eventually testified in court against her traffickers.
Kukunoor, an acclaimed writer and director, will travel to London for the event, and will be part of a tete-a-tete following the film's screening June 1 at the capital's Tricycle Theatre.
Lakshmi stars newcomer Monali Thakur in the central role, with Ram Kapoor and veteran Satish Kaushik in key roles.
The film had its world premiere in January at the Palm Springs International Film Festival 2014, where it won the audience award for best narrative feature.
Among the other highlights of this year's LAFF are an appearance by filmmaker Vishal Bhardwaj; Pam Chopra, the wife of the late filmmaker Yash Chopra; and Indian-American comedian Nadia P Mansoor as well as films from Pakistan, India and Britain.