The majority of the winners were picked by music fans in an online vote, from 12 categories listed and a further 32 separate prizes for different countries and regions.
The previous Video Music Awards saw hip hop artist Kanye West leap on stage to interrupt an acceptance speech by Swift and argue that Beyonce was better. One recent example was her appearance at X Factor where she performed in a live show only wearing a top a pair of knickers, with most viewers making fun of her by saying that she forgot to wear her pants.
Eminem was also named best hip-hop artist, and proclaimed surprise. The night's big victor, Mendes, sung his best song-winning track "There's Nothing Holding Me Back" from a huge light box.
U2 performed in London's Trafalgar Square the night before the MTV awards, along with DJ Guetta, to a crowd of 7,000 who won free tickets in a ballot. Other multiple nominees include Sheeran, Sam Mendes and Kendrick Lamar.
Grime star Stormzy brought the hometown vibes, arriving in a police vehicle and performing "Big for Your Boots". Dua Lipa scooped the best new artist accolade. Other big set-piece performances on the night included best pop victor Camilia Cabello's epic routine, which culminated in a Havana-style swimming pool being projected onto the stage, and The Killers' performance of "The Man", which used an innovative 360-degree filming technique.
Pop singer Kesha smashed out another powerful performance at the 2017 MTV EMAs on Sunday, bringing cathartic single "Learn to Let Go" to the stage with glitter and rainbows aplenty. Lovato, Mendes and Charli XCX are all performing.