The Backyardigans (partially lost British dub of Nick Jr. CGI-animated series; mid-late 2000s)
From The Lost Media Wiki
The Backyardigans is a Canadian-American television series that aired on Nick Jr. Like Oswald, Wonder Pets!, and Blue's Clues, it was redubbed for the UK market. The theme song for the dub has been uploaded to YouTube. But no full episodes of the British dub have currently been found.