Alan Coren is a prolific author (and he's appeared on plenty of TV shows, so people should know his face).
If you count poets among authors, then Pam Ayres and Roger McGough are fairly familar figures.
If you want to include some non-fiction, then Stephen Hawkin has a well-known face.
Sticking with non-fiction, just about any celebrity chef should match your requirements. (Delia Smith, perhaps?)
David Niven wrote several books.
Winston Churchill was awarded the Nobel prize for literature.
Staying with politicians, but definitely not at nobel prize level ;-) , what about Jeffrey Archer?
Alan Titchmarsh has written several novels.
Chris