Television:
* Catchphrase (2013-present): He hosts the long-running game show based on the original 1986 format.
* Britain's Got More Talent (2010-present): He presents the companion show to "Britain's Got Talent" and is a regular judge on the main show.
* The X Factor (2005-2015): He hosted the spin-off shows "The Xtra Factor" and "The X Factor: Battle of the Stars".
* Text Santa (2011-2015): He has hosted the annual charity telethon for several years.
* Animal Antics (2006): He presented this series showcasing various animals from around the world.
* Stephen Mulhern's Big Night Out (2006): He hosted this stand-up comedy show featuring a variety of comedians.
* The Vault (2011): He presented this game show where contestants answered questions to win money and prizes.
* Stephen Mulhern's Showboat (2011): He hosted this variety show with musical performances and guest appearances.
* Comedy Lab (2001): He starred in a sketch comedy show alongside other comedians.
* The Bigger Picture (2007): He presented this game show where contestants had to decipher clues to win prizes.
* Hollyoaks (1995): He had a guest appearance on this long-running British soap opera.
Movies:
* The Time Machine (2002): He played the role of a news reporter.
Other:
* He has performed in various pantomimes and stage productions.
* He has been a regular on a number of variety shows, including "Ant & Dec's Saturday Night Takeaway" and "SMTV Live".
Stephen Mulhern is a prolific television presenter with a wide range of experience across many entertainment formats. His popularity is largely attributed to his affable personality, his ability to connect with audiences, and his knack for light-hearted humor.