John Barrowman has reassured fans he's recovering after canceling the start of his U.K. Christmas album tour due to a "severe neck injury."

The Doctor Who and Torchwood actor was due to begin his tour in Bristol, southwest England on Saturday night but told fans that the injury had made it "impossible for me to sing & move."

"The Doctors have advised me to not perform this weekend while I try and recover," the actor wrote on Instagram.

Barrowman, who played fan favorite Captain Jack Harkness on Doctor Who and Torchwood, updated fans on Sunday, revealing that he'd undergone an "uncomfortable" procedure to correct the injury.

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During an appearance earlier today (December 2) on U.K. daytime show This Morning, Barrowman confirmed that he's now well on the mend.

"I was taken to hospital in Bristol and fortunately my brother-in-law is one of the top neurosurgeons in the U.K. and him and his friend Nick Patel decided to do an injection," he explained. "Which was two injections into the vertebrate and then [they] put steroids in there to alleviate the stress and the pain and reduce the swelling in the joint. And I have to say today I felt probably about 70-80 percent better."

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Continuing, Barrowman said he's returning to rehearsals this afternoon and hopes to perform his show in Manchester tonight. His tour in support of new holiday album A Fabulous Christmas is due to criss-cross the U.K. until December 14.

Get 100 percent well soon, John!

Do you have a favorite Captain Jack moment?