Ruth Madeley likes to think she was determined before she was born. “I think I was stubborn before I even arrived,” she says, laughing. It’s a quality the British actress, who was diagnosed with spina bifida while still in the womb, recognises in Judy Heumann, the American disability rights activist she plays in the new film Being Heumann. Heumann spent her life pushing back against the barriers that kept disabled people from participating fully in society.