George Michael has cancelled the remaining dates of his tour because of ill health, his publicist has confirmed.

The 48-year-old has been struck down with pneumonia while in Vienna.

This weekend, the former Wham idol was due to perform in Cardiff.

The star’s spokeswoman said in a statement: “George Michael is ill with pneumonia and any other speculation regarding his illness is unfounded and untrue.

“He is receiving excellent medical care, he is responding to treatment and slowly improving”.

A source told the Daily Mail: “George has woken up and he’s in good spirits. Doctors are very pleased with him, and he’s making progress.”

“He’s been in terrible pain. He’s had a dreadful chest infection, but he’s been in good care. He’s in very capable hands”.

They added: “This is a very serious condition. It cannot be understated. George needs rest. It takes ages to recover”.

Claims the star was also suffering heart problems by the Vienna Times have been dismissed by Michael’s team.

Discussions are under way about rescheduling the remaining 14 dates of his tour.