The 'Money on My Mind' hitmaker received the British Breakthrough Act gong as well as the Global Success Award for his international accomplishments.
While the 'Thinking Out Loud' singer ensured his wins tied with Smith, beating him for both the prestigious MasterCard British Album of the Year award as well as British Male Solo Artist.
"This is deja vu, I was here last year. This is amazing and (the trophies) are so beautiful," Smith said.
The 22-year-old singer also praised his fellow artist, Ed Sheeran, adding, "I'm so happy that Ed Sheeran won those awards, I truly think he deserves them."
"I win now and then but winning isn't really a thing I'm used to. To be honest I thought Sam was going to get Album or Male, so it's nice to get both."
And he couldn't be happier to win the prestigious Album of the Year gong, after previously losing out to Adele.
"I think this is the award that every British musician who's ever been up for a BRIT would like. I was up for it before but Adele was up for it as well so that was a written off thing. I'm glad this time I won," he added.
