A printing mix up led to early copies of the latest Bridget Jones book – Mad About the Boy – having a chunk of David Jason’s memoirs in the middle.

About 40 pages of Sir David Jason’s My Life were printed in Helen Fielding’s Bridget Jones: Mad About the Boy, both of which came out on the same day.

“The printers have had a Bridget moment,” said publishers Vintage.

It said it was recalling the misprinted copies and replacing them with correct versions.

“A printing error has been detected in some of the very early copies of Bridget Jones: Mad About The Boy,” said a Vintage spokesman.

A printing mix up led to early copies of the latest Bridget Jones book, Mad About the Boy, having a chunk of David Jason’s memoirs in the middle

“Copies printed on one day have given readers an accidental preview of David Jason’s autobiography.”

Both Helen Fielding and David Jason’s book were published on what the publishing world has dubbed “Super Thursday”, when publishing houses put out some of their highest-priority titles for the Christmas market.

Among other books released are Jennifer Saunders’ autobiography Bonkers, My Life in Laughs; Mo Farah’s Twin Ambitions and John Bishop’s How Did All This Happen?.

Mad About the Boy signals the final chapter of hapless “singleton” Bridget Jones’s diaries.

Fans may already know one of the significant plotlines after extracts were earlier published in the Sunday Times Magazine.

Although Helen Fielding herself approved the reveal, some fans were shocked to be told of such a major twist before the book had even been published.