Singer-songwriter James Morrison has cancelled another date on his current UK tour due to a mystery illness. 

The 'I Won't Let You Go' hitmaker is out on the road in support of his latest studio album, 'The Awakening', and pulled out of shows on Sunday and Monday after feeling "unwell" but has now axed another gig that was due to take place tonight (February 15) in Glasgow. 

A post sent to his official Twitter page explained: "We're sorry to report that tomorrow's Glasgow show has been postponed, on doctor's orders. We apologise for any inconvenience caused..."

"...We hope to announce replacement dates for the Glasgow, Bristol and Southend shows asap. JMHQ."

No further information has been given on Morrison's condition and he is set to continue the tour across England and mainland Europe until March 28 where he will finish the run in Portugal.