Idris Elba wants to see a "shift in attitude" from TV and film studios in light of recent anti-racism protests.
The BBC has announced plans to spend £100 million over three years to improve diversity and inclusivity in its programming, but Idris thinks more needs to be done in order to address the issue.
The ‘Luther’ star shared: "How do you quantify amplification of diversity? Diversity, by way of how many different types of human beings there are on the planet, is an ever-flowing tap. Can’t quantify that.
"But, not to comment on what the BBC have done, any steps moving forward to amplify diversity in storytelling is a good step. That doesn’t necessarily mean money – but money helps.
"It’s a shift in attitude, in perspective, in tolerance. And you can’t put an amount on that."
The London-born actor also voiced his support for the introduction of "real goals" in a bid to tackle the problem.
He told Radio Times magazine: "Any seismic, meaningful shift, in anything – any organisation, a small business, a large business, a country, a society – requires planning.
"It requires tasks. It requires real goals. And when we talk about racism in our society, in an industry, the way that makes most sense is to give people targets to move towards. To really highlight what moves the needle."
Asked whether TV channels are right to pull certain shows from their schedules amid accusations of racism, Idris replied: "I’m very much a believer in freedom of speech.
"But the thing about freedom of speech is that it’s not suitable for everybody. That’s why we have a rating system: we tell you that this particular content is rated U, PG, 15, 18, X … I don’t know anything about X, by the way."