Sir Kenneth Branagh has said the film industry "has to do something" about a lack of recognition for black or ethnic minority actors after the nominations for the main Oscars categories were an all-white affair.
The actor highlighted work by Idris Elba's work on Beasts Of No Nation as an example of a "fantastic" performance that had not been recognised by the award organisers.
"It's surprising and I think we have to do something about it," he said when asked about the issue at the London Critics' Circle Film Awards.
Sir Kenneth, whose credits include Valkyrie and My Week with Marilyn, maintained nevertheless that "talent will out" in the end.
Kate Winslet was more cautious, saying that there "probably should have been" more black and minority actors nominated in the Oscars.
"Whenever that happens it surprises me," she added.
It comes after the Revenant director Alejandro González Iñárritu told ITV News he was dismayed by the lack of diversity in the film world.
British actor David Harewood has also said Academy Award nominees should attend next month's ceremony "in blackface" to highlight the issue of diversity.