Capaldi carried his drink on stage to accept the award, which he did so by simply saying: "Thank you very f****** much."
But the entirety of his speech was muted for fans watching on television due to his use of the expletive.
Many viewers took to Twitter to celebrate Capaldi's win, joking that his speech was "inspiring."
"I feel like I'm a better person now," wrote one user.
"Lewis Capaldi downing a bottle of Red Stripe live on stage and getting his entire acceptance speech for Best New Artist muted is exactly what I needed to see," wrote another.
lewis capaldi's speech was very inspiring i feel like i'm a better person now— irene (@harryftirene)February 18, 2020
Lewis Capaldi downing a bottle of Red Stripe live on stage and getting his entire acceptance speech for Best New Artist muted is exactly what I needed to see 😂😂😂 #Brits2020— Tom Levins (@Tom_Levins)February 18, 2020
Lewis Capaldi: "........................................................"
WHAT a speech #Brits2020— Scott Bryan (@scottygb)February 18, 2020
~ Lewis Capaldi
I love Lewis and so does Niall— 𝙽𝚊𝚘𝚖𝚒 𝚒𝚜 𝙿𝚁𝙾𝚄𝙳 𝙾𝙵 𝙻𝙾𝚄𝙸𝚂 (@_Fooking_Loosah)February 18, 2020
For all those asking me, @LewisCapaldi said “thank you very f*cking much!” 😂👏🏼 CLASSIC CAPALDI. Well done lad. X— Calum Scott (@calumscott)February 18, 2020
— tee 🌙☀️ (@chocotoya)February 18, 2020
Capaldi is nominated for a further three awards tonight: Best Male Solo Artist, Song of the Year and Mastercard Album of the Year.
He earlier peformed his song Someone You Loved after Jack Whitehall paid tribute to the late Caroline Flack in his opening speech.
Follow live updates and highlights from the ceremony here.