BBC Worldwide has apologised after scripts for the new series of Doctor Who were leaked online and has asked fans not to share the spoilers.

In a statement to Radio Times, the commercial arm of the BBC said: “BBC Worldwide is currently investigating a security issue around Doctor Who Series 8 where unfinished material has inadvertently been made public. We deeply regret this and apologise to all the show’s fans, the BBC and the cast and crew who have worked tirelessly making the series.

“We would like to make a plea to anyone who might have any of this material and spoilers associated with it not to share it with a wider audience so that everyone can enjoy the show as it should be seen when it launches. We know only too well that Doctor Who fans are the best in the world and we thank them for their help with this and their continued loyalty.”

It’s understood the scripts were disseminated online after being sent to the BBC Worldwide’s newly opened Latin America headquarters in Miami for translation.

A source said the opening episode is being simulcast around the world, so translations have to be prepared in advance.

Deep Breath, the feature-length premiere episode of the eighth series, will screen on BBC1 on Saturday August 23.