Attenborough played the lead role in Jeremy Herrin's production of Another Country in the West End, and starred opposite Nicole Kidman onstage in Photograph 51.
[4] He has had roles in Sam Mendes-produced The Hollow Crown, Channel 4's Utopia, Home Fires, Denial starring Rachel Weisz, and the Oscar-winning Dunkirk.
[11] As a campaigner for 350.org, Attenborough helped secure mayor of London Sadiq Khan's commitment to shift City Hall's £5bn pension fund out of fossil fuel investments.
[12] Attenborough also launched a campaign with actors Leila Mimmack and Mark Rylance that successfully moved Equity's pension investments out of fossil fuels and into clean energy.
[13] In 2023, he co-founded the Green Rider campaign, which enables actors and film workers to take action on climate change within the screen industry.