The author behind the Paddington books is upset after U.K. censors warned parents the new film based on his beloved bear contains sexual "innuendo" and "bad language".

Censors at the British Board of Film Classification (Bbfc) have given the Paddington movie a Parental Guidance (Pg) certificate because it features "dangerous behaviour, mild threat, innuendo, infrequent mild bad language".

The news has upset Michael Bond, the writer behind the original book series, and he fears he may be in for a nasty surprise when he eventually sees the film based on his creation.

He tells Britain's Daily Mail newspaper, "I'm totally amazed. I'd be very upset. I might not sleep well tonight. I can't imagine what the sex references are. It doesn't enter into it with the books, certainly."

Censors issued the guidelines based on a scene in the film in which a villain "threatens to kill and stuff" Paddington Bear and a comical moment when a man dressed as a woman is flirted with by another man.

Paddington features Skyfall star Ben Whishaw voicing the title role.