Impressive casting.

It's a massive credit to the show and it's casting that so many of the cast are having successful careers after the show.

To my knowledge, I think most of the cast were relatively unknown before Utopia. Since then, almost all of the cast have had leading roles in high quality films and TV shows. A lot of them seem to be BBC drama regulars (a massive compliment).

It seems Utopia nurtured some real talent. Some of whom may have big careers. A credit to the producers. That's all.