BBC banned Enid Blyton for years 

Source: Reuters

Britain's public broadcaster banned famous children's author Enid Blyton for nearly 30 years because it considered her work small beer.
  
Newly released documents from the BBC archives reveal Blyton - who penned the hugely popular Famous Five, Secret Seven and Noddy books - made several unsuccessful attempts to have her work broadcast on radio.
  
She first pitched ideas in 1936 but did not appear on Woman's Hour until 1963.
  
A memo about a short story stated: "Not strong enough. It really is odd to think that this woman is a best-seller. It is all such very small beer."
  
BBC schools department head Jean Sutcliffe said in an internal memo dated 1938: "My impression of her stories is that they might do for Children's Hour but certainly not for Schools Dept, they haven't much literary value."
  
She added that they were competently written.
  
In August 1940, BBC radio show Children's Hour rejected her play The Monkey and the Barrel Organ, saying it was "stilted and long winded".
  
Blyton said in a memo to a BBC producer: "I and my stories are completely banned by the BBC as far as children are concerned - not one story has ever been broadcast, and, so it is said, not one ever will be."
  
In 1954, responding to a query from the Woman's Hour editor as to whether Blyton could be interviewed, Sutcliffe said she was concerned the BBC would become just another victim of the amazing advertising campaign which has raised this competent and tenacious second-rater to such astronomical heights of success.