The huge growth in revenues from Bollywood blockbusters is matched only by the wage demands of Indian film stars, according to the Aim-listed Indian Film Company.

But improvements in the quality of cinemas in the world’s largest film market have increased revenues by diminishing the amount of “leakage”, or corruption, that had been depriving producers and distributors of their fair shares, said Sandeep Bhargava, the company’s chief executive.