Joan Taylor known as Joanie (née Jackson) is a fictional character in The Catherine Tate Show, referred to mainly as "Nan". She is one of the main characters of the show and is portrayed by Catherine Tate. She has since gone on to be the main character of a number of specials. In 2022, she is going to be the main character in the movie entitled Nan: The Movie, featuring Matthew Horne reprising his role as her on-screen grandson Jamie from the original sketch series.