Fans think they know who GK Barry's least favourite guest is

The social media star and new Radio 1 host, whose real name is Grace Keeling, has filmed 231 episodes of her Saving Grace YouTube show.

While appearing on the Pod Got Nibbled podcast, the 27-year-old was asked to name her worst guest.

While she didn't outright name the celeb, she said: “If you followed me for a while you will know which one is my least favourite by the length of the episode. I’ll leave it there…”

Mark Wright during a Pro-AM round ahead of the Husqvarna British Masters (Image: Bradley Collyer/PA Wire)

Fans searched through her podcast episodes and found those featuring former The Only Way Is Essex star Mark Wright and singer Madison Beer both lasted about 30 minutes.

That was much shorter than many of her other interviews, which can last for more than an hour.

Viewers recalled US star Madison was “the sweetest person” during her interview and ruled her out as the possible answer.

In the comments of her YouTube video for Mark's episode, one viewer said: “He is hard workkk well done for your interviewing.”

Another commented that “he wasn’t really feeling this was he” while a third said it was like “trying to get blood out a rock. Very boring episode”.

Some viewers enjoyed the interview and praised Mark, who lives in Essex with his wife, actress Michelle Keegan.

One viewer said: “I like how Mark’s transitioned into a mature man, nice to see his growth!”

Grace presented on Radio 1 for the first time last week and said she was “shaking in my boots”.

She has an initial six-week run as part of a change to the station’s on-air line-up.

Broadcasters Rickie Haywood-Williams, Melvin Odoom and Dean McCullough were among those leaving the station.

The podcast discussion has led fans to compare interview lengths, rather than confirming which guest Grace meant.

Neither Mark nor Madison has officially been identified by Grace as her least favourite guest.