"Doctor Who" is not "thunderingly racist," BBC insisted. The British network has denied accusations that the long-running TV show is racist, saying it has a "strong track record of diverse casting."

An upcoming anthology series titled "Doctor Who and Race" has made strong accusations against the sci-fi programme.

The book, which is written by several contributors, is compiled by Lindy Orthia, who teaches at Australian Nation Centre for Public Awareness of Science at the Australian National University.

"The biggest elephant in the room is the problem privately nursed by many fans of loving a TV show when it is thunderingly racist," Orthia said.

With a strong accusation like that, BBC has opted to respond and deny the claim.

"Doctor Who has a strong track record of diverse casting among both regular and guest cast," it said in a statement obtained by Digital Spy. "Freema Agyeman became the first black companion and Noel Clarke starred in a major role for five years [Mickey Smith]."

Answering the allegation that the show only casts white actors in the lead role, a spokesperson of BBC said, "Reflecting the diversity of the UK is a duty of the BBC, and casting on Doctor Who is colour-blind. It is always about the best actors for the role."

BBC only addresses just one concern in the book, which also tackled other issues, such as slavery, imperialism, and xenophobia.

"Doctor Who and Race" is slated to hit shelves in July.

"Doctor Who" first aired in 1963, and currently has 11 incarnations of the titular character. Matt Smith is the latest Doctor, and Jenna-Louise Coleman is the current companion.