North East singer Chris Rea has cancelled 's scheduled concert tonight will not go ahead after he collapsed on stage last night.
The Driving Home For Christmas singer was performing at the New Theatre in Oxford when he fell to the stage mid-song, with one audience member describing him "falling into a clump".
The 66-year-old - who suffered a stroke last year - was scheduled to perform at the Brighton Centre tonight as part of his The Road Songs For Lovers tour.
But a spokesman for the singer said: "Unfortunately Chris Rea has had to cancel tonight's show at Brighton Centre due to illness.
"A decision about the outstanding date on his UK tour on 12th December at Bournemouth International Centre will be made in the near future."
Shortly after the incident last night, Rea was thought to be in a "stable" condition.
Darren Fewins, who had been watching the show with his wife, told the Press Association the musician had been on stage for 40 to 45 minutes before he fell backwards.
"He was standing by the microphone and he had the guitar in his hand and he kept shaking his left hand as if there was something not quite right with it," the 46-year-old said.
"He walked forward to the microphone and he was trying to grab the microphone with his left hand, and it was swinging from side-to-side.
"I thought at first there was something wrong with it and he was trying to keep it steady. He then took three or four steps backwards.
"Then he just collapsed on the stage backwards. There was no-one there to catch him, he just fell into a clump.
"He was on his back for about two minutes before they brought the curtain down and then that was it."
Another audience member said Rea had been "slurring his words a lot through the song beforehand".
A spokeswoman for South Central Ambulance Service said on Saturday night: "We were called at 9.30pm to attend to an incident in George Street in Oxford.
"We had an ambulance crew on scene and one patient has now been taken to hospital."
When asked about the condition of the person, she said they were "stable".
The Middlesbrough-born musician was diagnosed with pancreatic cancer and had his pancreas removed in 2001, and in 2016 he suffered a stroke.
Rea told BBC Breakfast in August: "I had a stroke exactly this time last year, and I stopped smoking this time last year."
He said he is still feeling the effects, and added: "I'm fine when I'm sitting down, I've just got a little bit of balance - it's a bit dodgy, just in case anyone thinks I'm drunk on-stage."