The comedienne will be seen returning to the role of foul-mouthed Joannie "Nan" Taylor for a festive special on Christmas Day. The one-off episode is a spoof of Charles Dickens's A Christmas Carol and shows Nan's past misdeeds coming back to haunt her.
Speaking on whether her other characters will be back on screen in the future, Tate told PA: "I don't have any plans for a next series, I don't really plan far in advance."
She continued: "I didn't even think of doing this Christmas special until September, so I honestly don't know what I'm going to do next."
The last full series of The Catherine Tate Show aired in 2006. Tate subsequently starred in a Christmas episode the following year.
Catherine Tate: Nan's Christmas Carol airs on Christmas Day at 10.30pm on BBC One.