Question: What is a 2005 French-British computer-animated adventure fantasy film based on the television series "The Magic Roundabout, that had an English film and television actor well known as a voice over actor ? 
Sentence (from "The Magic Roundabout (film)"): The Magic Roundabout (released in France as Pollux - Le manège enchanté and redubbed in the United States as Doogal or The Lord of the Springs) is a 2005 French-British computer-animated adventure fantasy film based on the television series "The Magic Roundabout".
Relevant evidence: Yes