The singer expressed her love for Belfast while walking the red carpet at the Waterfront Hall in January - and she has now revealed some great acts were discovered during the auditions."I liked going to Belfast for first time this year," she said."I used to do Irish dancing when I was little, so I've got a soft spot for it and we found some great Irish dancing acts, which was lovely."This year's auditions kicked off in Belfast, and Dixon admitted she found it difficult leaving her baby daughter Azura for the first time.She said: "I'm not going to lie, it was difficult to leave my daughter for the first audition day as I hadn't really spent any time apart from her then."But once I came back I was in a work frame of mind and also I'm really lucky as I've got a great support system so I know she is in good hands."I do wish I could bring her down to watch some of the auditions though, but she's too small at the moment. Maybe when she's older and if I'm still lucky enough to still be doing this I will bring her to watch."Dixon may be known for her crazy laugh and approachable manner, but she said she has been a lot "tougher" on this year's contestants."I just think I've made more of decision that I'm going to go with my gut, my instinct on whether I like an act and whether I think the country will like it or whether it would be something the Royal Family would want to watch."I've tried not to be swayed by the audience or the other Judges this time, although David (Walliams) often sticks up for the underdogs and tries to get you to say yes. I have been tougher this year and have been swayed less than last time."One thing I noticed when watching the show back at home last year, was that there were some acts who I said yes to that when I saw them back on TV, I was like, "why the hell did I do that?"This year's Britain's Got Talent will include the introduction of a brand new feature - the Golden Buzzer.Each judge, along with presenters Ant and Dec, can press the Golden Buzzer once during the auditions to send an act straight into the live semi-finals.Britain's Got Talent returns to UTV on Saturday 12 April from 7.15pm.