| Year | Title | Role | Channel | Notes |
| 1987 | Music Box | Presenter | Central Television | |
| 1987 | The Video Jukebox | Presenter | Grampian Television | |
| 1989 | The Traveling Talk Show | Presenter | Channel 4 | |
| 1988–1991, 1994–1997 | Top of the Pops | Presenter | BBC One | |
| 1988–1994 | Wheel of Fortune | Presenter | ITV | |
| 1990 | You'd Better Believe It | Presenter | Central Television | |
| 1990–2004 | Central Live | Presenter | Central Television | |
| 1992 | Goal | Pop star | Sky TV | |
| 1993 | The Big Race | Presenter | ITV | |
| 1993 | Strictly Classified | Presenter | Granada Television | |
| 1995 | The Nicky Campbell Show | Presenter | BBC Scotland | |
| 1996 | Ride On | Presenter | Channel 4 | |
| 1997 | Referendum Street | Presenter | BBC One | |
| 1998–2002 | Thursday Night Live | Presenter | ITV | |
| 1998 | Leviathan | Presenter | BBC Two | |
| 1999 | The Rugby World Cup | Presenter | ITV | |
| 1999 | Newsnight | Presenter | BBC Two | |
| 2001–2009 | Watchdog | Co-presenter | BBC One | With Kate Gerbeau and Julia Bradbury |
| 2001 | Panorama | Presenter | |
| 2001 | Newsnight | Presenter | BBC Two | |
| 2002 | Your NHS | Presenter | BBC One | |
| 2003 | David Blaine; the Event | Presenter | Sky One/ Channel 4 | |
| 2004 | Now You're Talking | Presenter | BBC One | |
| 2004 | Come and Have a Go If You Think You're Smart Enough | Presenter | |
| 2005 | The Last Word | Presenter | BBC Scotland | |
| 2007 | The Rest of Your Life | Presenter | ITV | |
| 2007 | Who Do You Think You Are? | Presenter | BBC One | |
| 2007–2021 | The Big Questions | Presenter | |
| 2009 | The Battle of the Brains | Presenter | |
| 2009–present | Long Lost Families | Presenter | ITV | |
| 2013 | Your Money Their Tricks | Co-presenter | BBC One | With Sian Williams and Rebecca Wilcox |
| 2014 | Wanted: A Family of My Own | Presenter | ITV | 1 series |
| 2015 | Perspectives: The Great American Love Song | Presenter | Guest presenter; 1 episode |
| Rebuild Our Home | Presenter | One-off episode |
| 2017 | Women at War | Presenter | BBC One | |
| All Star Musicals | Participant | ITV | |
| 2018 | Born Without a Trace | Presenter | BBC One |
| 2018 | Coronation Street's DNA Secrets | Presenter | ITV | One-off Episode |
| 2019–2020 | Operation Live | Presenter | Channel 5 | |
| 2021 | Manhunt: The Raul Moat Story | Presnter | ITV |
| 2023 | Secrets of the Bay City Rollers | Presenter | ITVX |
| 2024 | The Masked Singer UK | Participant | ITV1 | Unmasked as "Dippy Egg" |