Hegerty labelled Knowles’ critics as ‘idiots’, and she took to social media to support her friend just weeks after he faced separate controversy for his feature a Shreddies advert.
The pair met on I’m a Celebrity…Get Me Out of Here! and became great friends, Kent Live reports.
The quiz maestro’s strong words came after a fan accused Nick of being a conspiracy theorist who believed ‘humans never stepped on the moon’.
The angry Twitter user wrote: “@BBC I saw an episode of “Home is Where the Art Is”. I was disturbed to see that the presenter was @MrNickKnowles!”
They added: “I remember him from IACGMOOH a few years ago. Knowles is a conspiracy theorist who expounded his theory that humans have never stepped on the moon!
“@bbc you’d better look back at those episodes of IACGMOOH.
“If he thinks the moon landing is a hoax then he should not be an employee of the BBC.”
The viewer had in fact misunderstood the episode of I’m a Celeb that he was referencing, which Nick, who went to school in Tunbridge Wells, was quick to clear up.
He replied to the Tweet: “I think you need to take life less seriously and realise I might have been winding @anne_hegerty my lovely friend up to while away the long hours in the jungle.
“Disturbing that someone joking with a friend might then present a show eh?”
Anne was soon chiming in on the matter and took Nick’s side.
She wrote: “Some people are idiots, Nick. Let’s ignore them!”
It was the latest fire for Tunbridge Wells’ Nick to put out after drama surrounding a Shreddies advert last week.
In the advert, Nick plays a builder but it wasn’t received well by the BBC.
BBC bosses reportedly called a meeting with Nick to give him the ultimatum of pulling the advert or continuing at the BBC.
A source told The Sun : “[The BBC] have very strict guidelines when it comes to their talent and advertising and he has already broken them by filming the ads. But Shreddies don’t want to pull the campaign.
“While Nick is technically a free agent, he appears to have used his connection to DIY SOS in the advert which is totally out of order in the eyes of the BBC.”