Who is Calum Scott?

Never heard of this guy before but upon browsing youtube, I stumbled upon one of his videos and I said to myself, "What an awesome voice, and oh man, this guy looks good!". His voice I would say, can be compared to Adam Levine, with much higher range. So I searched who this artist was and apparently he's one of the contestants on Britain's Got talent last 2015. I was able to saw how Simon Cowell and the rest of the judges loved him from the very start of his audition. He even got Simon's golden buzzer on the first time he heard him. See his audition on this video below.