What actors and actresses appeared in A Bit of a Do - 1989?

You're probably thinking of "A Bit of Fry and Laurie" which was a sketch comedy show that ran from 1989 to 1995, featuring the comedic duo Stephen Fry and Hugh Laurie.

There is no movie or TV show titled "A Bit of a Do" featuring Fry and Laurie, and it's likely a misunderstanding or misremembered title.

If you can provide more details about the show or film you're interested in, I can help you find the cast list.