Sir Billy Connolly has said the medical challenges he faces while filming for television are “getting worse”.

He was speaking during a session at the Edinburgh TV Festival, which is honouring him with a lifetime achievement award for his contribution to the industry.

Sir Billy, 78, was diagnosed with Parkinson’s disease in 2013 and retired from live performances five years later, but he has continued to record programmes for television.

During an interview with his wife Dr Pamela Stephenson Connolly, he said making television programmes now is a “challenge”.

He added: “The challenges lately have been medical. They are getting worse.

“I will have to weigh it up and see how bad it gets. Play it by ear.”