here is the link of the official website: http://talent.itv.com/
and here is the link of a beautiful performance: http://www.dailymotion.com/video/x10rfqz_attraction-finale-britain-s-got-talent-2013_tv
Here is the link of the performance of Hollie Steel: http://www.youtube.com/watch?v=BI-QJU4azmY