John Barrowman has been forced to cancel shows at the start of a UK tour after suffering "a severe neck injury".
The star of Doctor Who and Torchwood was due to begin his eight-date "Fabulous Christmas Tour" at the Bristol Hippodrome on Saturday.
But in a tweet he said he had been rushed to hospital with a neck injury that made it "impossible to sing and move".
Performances are still scheduled for next week.
I'm devastated to have to tell you that due to a severe neck injury, which has made it impossible for me to sing & move, I've been rushed to hospital for a diagnosis. The Doctors have advised me to not perform this… https://t.co/oMcfrAVYEY— John Barrowman MBE (@JohnBarrowman) November 30, 2019
The 52-year-old entertainer later tweeted that he was having an MRI scan on his neck.
He said it was a "very difficult decision" to "cancel my performances", adding: "I am so disappointed and upset as I was looking forward to seeing you all.
"I feel I am letting everyone down, but it's simply not possible for me to do the show in my current condition."
Ticket holders for the Bristol performance have been told they can receive a refund or transfer to the performance in Oxford on December 14.
A performance at the SEC Armadillo in Glasgow on December 1 has been postponed to December 3.
John Barrowman's show this evening has been cancelled due to injury. If you would like to exchange your tickets to Sat 14th Dec at Oxford New Theatre please call 0333 096 690. Otherwise you will receive a refund from your point of sale. pic.twitter.com/riPFdKlIRu— Bristol Hippodrome (@BristolHipp) November 30, 2019