The third round of BGT: The Champions airs this Saturday, and the lineup is full of UK favorites, as well as several acts from around the world. But only two of them will move on to the finals.\n\n\n\nSo far, dog act Alexa Lauenburger, daredevils Bello & Annaliese Nock, sand artist Kseniya Simonova, and dance group MerseyGirls have all made it to the finals. Which acts from this week will join them? Check out a few previews below.\n\n\n\n\nhttps:\/\/www.youtube.com\/watch?v=4qV_Fc6xyg0\nRichard & Adam sing on "BGT: The Champions."\n\n\n\nRichard & Adam Return To 'BGT'\n\n\n\nThese singing brothers came in third place in the seventh season of Britain's Got Talent. Now they're back, and once again showing off their beautiful voices. In the preview clip above, they're accompanied by an orchestra of violinists. Will their music carry them to the finals?\n\n\n\n\nhttps:\/\/www.youtube.com\/watch?v=Z0EVrGX3lyg\nPaddy & Nico salsa dance on "BGT: The Champions."\n\n\n\nPaddy & Nico Spice Things Up On 'BGT: The Champions'\n\n\n\nThis salsa-dancing duo is made up of 85-year-old Paddy Jones and her partner, Nico Espinosa. They appeared on Season 8 of Britain's Got Talent. They're returning to the stage to show that age is just a number, with a spicy dance routine that will wow you.\n\n\n\n\nhttps:\/\/www.youtube.com\/watch?v=WJrV-ptv28Q\nComedian Jack Carroll is back to make the "BGT: Champions" audience laugh.\n\n\n\nJack Carroll Makes The 'BGT' Crowd Laugh\n\n\n\nJack was the runner-up in Season 7 of BGT, at the age of 14. He frequently speaks about his experience with cerebral palsy as part of his comedy routine. Now 20, he's back to make the crowd laugh. In the above preview, he jokes about watching people trip over his walking frame on the dancefloor.\n\n\n\n\nhttps:\/\/www.instagram.com\/p\/B2WpYTGpzqz\/\n\n\n\n\nWho Else Is Performing On 'BGT: The Champions' Week 3?\n\n\n\nCheck out the rest of the lineup for Saturday's new episode below. It includes several acts who also appeared on AGT: The Champions earlier this year.\n\n\n\nCristina Ramos, singer, winner of Spain's Got Talent, AGT: Champions contestantDarcy Oake, magician, contestant on Britain's Got Talent and AGT: ChampionsDJ Arch Jr., DJ act, winner of South Africa's Got Talent, AGT: Champions contestantMayyas, dance group, winners of Arabs Got TalentRichard Jones, magician, winner of Season 10 of BGTThe Fire, dance group, winners of Holland's Got Talent\n\n\n\nWatch all of these acts perform Saturday night at 8:15 pm on ITV and STV.