Hayley Atwell fits Helen well, but her American accent is inconsistent and occasionally slips.
Pros: score quality, critic appeal
Cons: character consistency, plot clarity
Best TV Shows for accent authenticity
The British and Irish accents are the most repeated craft complaint. Several critics say they can be distracting or less authentic, though others adjust quickly and still value the performances.
Pros: cliffhanger effectiveness, main cast performance
Cons: humor, family friendliness
Adult Ruben’s shift to Gadd’s normal voice struck one critic as jarring beside the younger portrayal, weakening the sense that both versions are the same man.
Pros: season finale quality, screenplay quality
Cons: realism, rewatch value