The Scottish singer won two awards at Tuesday night’s ceremony, including Best New Artist.
Lewis and British rapper Dave had entered the evening with the most nominations, with four each.
And while Dave only took home one, he was awarded the biggest prize of the night with PSYCHODRAMA named Album Of The Year.
He also delivered one of the performances of the evening, with a politically-charged rendition of his single Black, which took aim at prime minister Boris Johnson and the media’s treatment of Meghan Markle.
On an evening that had referenced the lack of female nominees across the non-gendered categories, Mabel and Billie Eilish were the only women to win, taking home Best Female Solo artist and Best International Female Solo Artist respectively.
British singer/songwriter Celeste had previously been announced as the recipient of this year’s newly-renamed Rising Star prize, after beating fellow shortlisters Beabadoobee and Joy Crookes.
Check out the full list of winners below...
Female Solo Artist
Mabel – WINNER
Male Solo Artist
Stormzy – WINNER
Group Of The Year
Bring Me The Horizon
Foals – WINNER
New Artist Of The Year
Lewis Capaldi – WINNER
Song Of The Year
Dancing With A Stranger – Sam Smith and Normani
Don’t Call Me Up – Mabel
Giant – Calvin Harris and Rag’n’Bone Man
I Don’t Care – Ed Sheeran and Justin Bieber
Just You And I - Tom Walker
Ladbroke Grove – AJ Tracey
Location – Dave and Burna Boy
Nothing Breaks Like A Heart – Mark Ronson and Miley Cyrus
Someone You Loved – Lewis Capaldi – WINNER
Vossi Bop – Stormzy
International Male Solo Artist
Tyler, The Creator – WINNER
International Female Solo Artist
Billie Eilish – WINNER
Lana Del Rey
Album Of The Year
Divinely Uninspired To A Hellish Extent - Lewis Capaldi
Fine Line - Harry Styles
Heavy Is The Head - Stormzy
Kiwanuka - Michael Kiwanuka
PSYCHODRAMA - Dave – WINNER