Former Blue Peter host Yvette Fielding has criticised the decision to take the show off BBC1.
The world's longest-running children's TV show, which Fielding hosted from 1987 until 1992, has been moved to digital children's channel CBBC.
Fielding said: "I don't have the time (to watch it), but I am angry that it has been moved from BBC1 to CBBC. It deserves to be on mainstream television, not on the digital channel.
"People seem to forget that it's not just a kids' show, it's a family show, and a generation of children and their parents are missing out because it's less accessible. It should be on BBC1, just before Pointless."
CBBC and former Blue Peter producer Richard Marson said he worried that modern TV shows no longer reflected children's lives.
"What's most under threat are the grassroots shows that reflect the contemporary lives of children in this country," he said.