Credentials: The king of Irish pop has had major chart success with acts including Boyzone and Westlife.
X Factor track record: A winner with Shayne Ward in 2005.
Walsh comments on this years auditions: I think the element that I enjoyed most about the new look auditions were the audience. Every city weve visited felt different every time and theres nowhere to hide!
On what makes the X Factor: Its really hard to define or find I think its someone with talent, likeability, good work ethic, personality and charm. Its somebody thats got everything!!!!
Louis says: (on last years runners-up, who he mentored) Im so pleased and proud of JLS. They worked so hard on the show last year and have worked extra hard since it finished, as a group they deserve every success.
Geri adds spice to X Factor panel
Geri Halliwell stands in as a guest judge on the X Factor, and she is reported to be the preferred choice to become a permanent replacement for Kelly Rowland. Mel B has also been signed up for a guest role on the panel.
Britney joins US X-Factor
Despite weeks of rumors, Spear's inclusion wasn't made official until she strode onto New York's Beacon Theater stage on Monday at an event which presents next season's schedule to advertisers. Wearing a white minidress, the singer was ac
Tulisa named world's sexiest woman
The X Factor judge, 23, who recently hit the headlines when a sex tape appeared online showing her sharing an "intimate moment" with a former boyfriend, tops the annual FHM list.
Weller slams TV talent shows
Paul Weller called TV talent shows "Saturday-night viewing for the masses", adding: "Would I be a judge? Would I hell."
Geri adds spice to X Factor panel Geri Halliwell stands in as a guest judge on the X Factor, and she is reported to be the preferred choice to become a permanent replacement for Kelly Rowland. Mel B has also been signed up for a guest role on the panel.