He has worked with directors such as Roman Polanski, James Ivory, Sir David Lean, Jerry London, Ronald Neame, Satyajit Ray, Mrinal Sen, Shyam Benegal, and Montazur Rahman Akbar.

He single-handedly led five mules loaded with relief materials plus carried a backpack of 30 kg (66 lb) of milk and medicines to Pinswar village (which is beyond the tree line) just before the first winter snowfall and before the Govt supplies reached.

In December 1999, he and his wife Maya brought in the new millennium with hands-on participation in relief work in cyclone-devastated Orissa which included rebuilding mud huts and clearing animal carcasses.

He brought in renowned artists such as M. F. Husain, Jehangir Sabavala, Anjolie Ela Menon, Bikash Bhattacharjee, Sakti Burman, and many others to exhibit.

He acted in Merchant Ivory Productions Hullabaloo Over Georgie and Bonnie's Pictures, Satyajit Ray's Shatranj Ke Khilari and Ghare Baire and in Mrinal Sen's Mahaprithivi.

Banerjee, Plácido Domingo, Kiri Te Kanawa and Jackie Stewart were featured as celebrities who refused to live away from their home countries.

Banerjee is the only person in India who has won the National Award in three categories: as a cinematographer, for his documentary Where No Journeys End (which, in competition with 3100 entries from 27 countries, also won the Gold Award at the Houston International Film Festival); as a director, for his documentary The Splendour of Garhwal and Roopkund; and as an actor (Best Supporting Actor) for his work in Satyajit Ray's Ghare Baire.

[12] As an active member of the BJP, he was critical of Mulayam Singh Yadav's order to shoot the Karsevaks who had once climbed the Babri Masjid prior to its demolition.