If you were asked to guess which prestigious film-making duo had spent their career scratching around desperately for cash, trying to wriggle out of paying their cast and crew, ping-ponging between lovers, and having such blood-curdling bust-ups that their neighbours called the police, it might be some time before “Merchant Ivory” sprang to mind.

But a new warts-and-all documentary about the Indian producer Ismail Merchant and the US director James Ivory makes it clear that the simmering passions in their films, such as the EM Forster trilogy of A Room With a View, Maurice and Howards End, were nothing compared to the scalding, volatile ones behind the camera.

Those literary adaptations launched the careers of Hugh Grant, Helena Bonham Carter, Rupert Graves and Julian Sands, and helped make stars of Emma Thompson and Daniel Day-Lewis.

Only 30 or 40% of the budget was in place by the time the cameras started rolling in India in 1982; Merchant would rise at dawn to steal the telegrams from the actors’ hotels so they didn’t know their agents were urging them to down tools.

There was still an appetite for upper-middle-class British repression, but only if it was funny: Richard Curtis drew on some of Merchant Ivory’s repertory company of actors (Grant, Thompson, Simon Callow) for a run of hits beginning with Four Weddings and a Funeral, which took the poshos out of period dress and plonked them into romcoms.

“Jefferson and Picasso were not figures that audiences warmed to.” Four years after Merchant’s death, Ivory’s solo project The City of Your Final Destination became mired in lawsuits, including one from Anthony Hopkins for unpaid earnings.

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