The Scottish comedian wants people to film themselves talking about meeting him during different times in his career or to tell a story about how he may have impacted their life for a new programme. The 73-year-old was diagnosed with Parkinson's disease in 2013, but has continued to work and recently announced he will trek England and Wales with his High Horse tour later this year (16).

A message posted on his official website states a TV special is currently in the works and asks fans to contribute to the show.

The post reads: "Do you have a Billy story you would like to share?

"Just record a short video of yourself recalling a meeting with Billy or an anecdote about how he has affected your life or that of a family member or friend... Your story could be selected for inclusion in a TV programme special celebrating Billy."

The stand-up star recently revealed how continuing to work helped him cope with the symptoms of Parkinson's, which affects a person's physical movement.

"It's a miracle. I think science should study it. I've gone on stage sick and come off better," he shared. "And then the minute it's finished, you get sick as if your illnesses are all waiting to happen.

"The Parkinson's just rolls along singing a song. So I keep trying to find lighter things to say about it, because they notice I've got it.

The deadline for posting messages, which should be no longer than three minutes, is 31 August (16).