Channel 5 pulled a history documentary from TV schedules not long after after one of its contributors was alleged as being a "hardline Nazi" on social media.
A spokesperson for the broadcaster told The Sun: "We will not be airing the film this evening whilst producers look into this further."
The Year The Thames Flooded was due to air on Sunday 26 November, at 9pm but was axed just 30 minutes ahead of schedules after historian Nikki Shaw was linked with some extreme social media posts.
Shaw, who featured in the documentary about the 1928 floods in London, was alleged to have shared a picture of herself on Facebook posing with a Swastika lollipop.
Another image appears to show her giving a Nazi salute, and she was quoted as writing: "I’m a racial nationalist coz that’s what I believe so I won’t defend race mixing no matter who done it."
Shaw had also shared hate messages targeted at non-binary singer Sam Smith.
Shaw is said to have posted these messages on social media platform Facebook under the name Bunty Mcbint. This account has now been deleted.
Her historic posts were shared on social media platform X, formerly known as Twitter, by the account @hopenothate. Yahoo has been unable to verify the posts, and has attempted to contact Shaw for a response.
At 8.30pm Channel 5 pulled The Year The Thames Flooded and replaced it with a repeat of weather documentary Beast from the East: The Big Freeze of 2018.
Yahoo UK has contacted Channel 5 for comment.