It's the third week of the audition show, and so far there has been some pretty impressive acts seen by the judges, and even a few gold buttons pushed. Although a lot of red buttons pushed too. The search continues tonight for judges Simon Cowell, David Walliams, Amanda Holden and Alesha Dixon as they hope to find the act that will follow in the footsteps of previous winners Collabro, Diversity and of course, Pudsey the Dog.