28 February 2017 Last updated at 07:28 GMT
The five boys - AJ, Curtis, Nick, Sario and Yazdan - fought off competition from the two other finalist groups, Nightfall and Drive, to be chosen by a public vote as the winners in the BBC One contest.
They sang their way to victory with performances of You Can't Stop The Beat from musical Hairspray and Wrecking Ball by Miley Cyrus.
Martin went to meet the victorious band to talk about their TV success, living together and their boyband heroes.
Boy band Five To Five won TV show 'Let It Shine' over the weekend, bagging themselves a year's contract as stars of a new touring musical inspired by Take That's songs.