Subscribe for more! Looks like Jamies day isnt going to be quite so pukka after all. Watch as Ant and Dec go undercover, totally ruining .<br>Subscribe for more! Ant &amp; Dec are undercover on chef Gordon Ramsays filming location in LA for the cooking programme MasterChef.<br>Jamie Oliver and Michelle Keegan take on our Saturday Night Takeaway Pizza Portraits Challenge! But who wins? You let us know your opinion in the .<br>Watch all of Ant &amp; Decs undercover pranks on the Saturday Night Takeaway, including our famous stunts on James Corden, Gordan Ramsay and One Direction!
