Answer
Angela Rippon replaced Gaby Roslin as a stand-in newsreader on "The Big Breakfast" in 1992. Roslin was the main newsreader on the show from 1989 to 1992, and Rippon filled in for her when she was unavailable. Rippon was a veteran broadcaster who had previously worked on "Newsnight" and "Today". She remained a regular on "The Big Breakfast" until 1996, when she left to join "Breakfast Time".