Question: Mark Anthony Richard Powell is a British fashion designer who has gained a celebrity clientele with custom from an English actor who made his acting debut in what television film?  
Sentence (from "Daniel Radcliffe"): He made his acting debut at 10 years of age in BBC One's 1999 television film "David Copperfield", followed by his cinematic debut in 2001's "The Tailor of Panama".
Relevant evidence: Yes