Robson Green has baffled fans after after some viewers accused the TV star of 'changing his accent' during an appearance on a hit BBC show on Saturday (January 28) morning.

The actor joined Matt Tebbutt on Saturday Kitchen to sample dishes and chat about upcoming projects.

However, fans of both the show and the actor were left scratching their heads as several pointed out that the 58-year-old's accent had "changed".

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The Northumberland-born actor chatted with Matt about his upcoming TV appearances, but viewers were distracted by the way he spoke.

"It's your first time on the show," Matt pointed out, to which Robson replied: "I know!"

"You've been kicking around a while, why haven't you been here?" The host joked.

"I grew up following cooking shows, I love them as I mentioned before," the actor stated.

He went on: "It's great to be surrounded by a gathering of chefs!"

"What is that collective noun?" Matt asked, to which the actor responded: "Temperance."

"Is that true?" Matt quizzed before regular Olly Smith asked: "What do you mean, 'it is true?'"

"Yeah, I lied," Robson quipped, adding: "I am a pathological liar!"

"I didn't know that, I was expecting you to say something really rude," Matt laughed.

"What is it for zebras? A dazzle," Robson continued. "Crow - a murder."

The group went on to discuss Robson's new show, Robson Green's Weekend Escapes.

However, viewers were baffled by Robson's voice and took to social media to question it, with one person saying: "#SaturdayKitchen what happened to the geordie bloke's accent? He used to sound great. Did British classism steal his soul?"

"Where's his geordie accent gone? #saturdaykitchen," another asked, while one added: "Lost his accent, hasn't he? #SaturdayKitchen."