The Dancing on Ice judge, 54, was previously due to make a pre-recorded appearance on interactive London theatre show Doctor Who: Time Fracture.
However, now the actor is no longer due to appear at the event.
A statement on the event’s website read: “Immersive Everywhere have taken the decision to remove [John Barrowman’s] pre record from Doctor Who: Time Fracture.
“We will continue to include content that pays tribute to this brilliant show that is Torchwood so as not to disappoint its fans, and are working on an exciting storyline to be announced soon.”
John memorably portrayed Captain Jack Harkness in the sci-fi series and its spin-off titles following his debut in the 2005 revival series.
Now, silver-haired John has been spotted walking around near his home in California as he runs errands.
In the images, John can be seen in a t-shirt and shorts and trainers as he was around – sometimes wearing a face mask.
John headed off to buy an iced beverage from Starbucks as he was spotted around Palm Springs and later visited a petrol station.
He can be seen in both a white t-shirt and navy t-shirt at different points.
Recent weeks have seen accusations of John exposing himself on the set of both Doctor Who and Torchwood during his time on the show, according to The Guardian.
The behaviour was described as being inappropriate but not sexually predatory.
One woman quoted by The Guardian was quoted as saying: “He would get his genitals out on a regular basis.”
Lawyers for Barrowman said that he did “not recall” the incidents described in the claims.
In a statement to The Guardian, Barrowman said his “high-spirited behaviour” was “only ever intended in good humour to entertain colleagues on set and backstage”.
He went on: “With the benefit of hindsight, I understand that upset may have been caused by my exuberant behaviour and I have apologised for this previously.
“Since my apology in November 2008, my understanding and behaviour have also changed.”
He had previously apologised after an appearance on BBC Radio One in 2008 which saw him expose himself live on air.
The allegations about Barrowman’s behaviour followed a video resurfacing online of Doctor Who co-stars Noel Clarke and Camille Coduri and Annette Badland appearing on a panel, with Clarke discussing Barrowman exposing himself on-set.
In the video, Clarke asks Coduri: “Do you remember that time he put it on your shoulder in the makeup truck?”
Coduri responds: “Yes, I do.”
In a statement, Clarke said he understood that “some of my actions have affected people in ways I did not intend or realise” and said he was “deeply sorry” to those individuals