* "Never" is a very strong word. It's almost impossible to keep track of *every single* comedic actor who has ever appeared on Coronation Street, even in tiny roles.
* Comedians often have "day jobs" as actors. Many comedians have a background in acting and may appear in small roles in various shows, including soap operas.
Therefore, it's likely that a comedian *has* appeared in Coronation Street at some point, but their role might have been so small that it went unnoticed.
To give you a more helpful answer, could you tell me:
* Are you thinking of a specific comedian? If you have someone in mind, we can look up their filmography.
* What kind of role are you interested in? A recurring character? A one-off guest appearance? A cameo?
The more information you give me, the better I can help you! 😊