I'll edit this as I remember things along the month
Best British Male: Plan B; Calvin Harris; Totally Enormous Extinct Dinosaurs; Michael Kiwanuka
Best British Female: Jessie Ware; Kate Bush; Florence + the Machine; Bat For Lashes
Best British Group: Little Mix, Parade
Best British Band: Noel Gallagher's High Flying Birds; The Maccabees; Saint Etienne; Cloud Nothings
Best British Album: "Given to the Wild", the Maccabees; "Django Django", Django Django; "50 Words for Snow", Kate Bush; "In Our Heads", Hot Chip
Best British Single: "If I Had a Gun...", Noel Gallagher's High Flying Birds; "No Light No Light", Florence + the Machine; "Bad Girls", M.I.A.; "We'll Be Coming Back", Calvin Harris; "Just Be", Paloma Faith; "Angels", the xx; "Pelican", the Maccabees; "Laura", Bat for Lashes
Best British Breakthrough Artist: Django Django; Kindness; Jessie Ware; Cooly G
Best British Breakthrough Single: "Default", Django Django; "Sappho", Tribes; "Wings", Little Mix; "Running", Jessie Ware
Best International Male: Perfume Genius; Frank Ocean; Jack White; Usher
Best International Female: Santigold; Fiona Apple; Grimes; Azealia Banks
Best International Group: I uh... do these even exist any more?
Best International Band: M83; The Black Keys; Passion Pit; Beach House
Best International Album: "Hurry Up, We're Dreaming", M83; "Visions", Grimes; "Channel Orange", Frank Ocean; "Put Your Back N 2 It", Perfume Genius
Best International Single: "Take a Walk", Passion Pit; "Gold on the Ceiling", the Black Keys; "Born to Die", Lana Del Rey; "End of the Line", Sleigh Bells; "Oblivion", Grimes; "Pyramids", Frank Ocean; "Disparate Youth", Santigold; "Climax", Usher.
Best International Breakthrough Artist: Azealia Banks; PSY; Friends, The Sound of Arrows
Best International Breakthrough Single: "212", Azealia Banks; "Gangnam Style", PSY; "I Love It", Icona Pop; "A Real Hero", College; "I'm His Girl", Friends; "Nova", The Sound of Arrows
Best Music Video: "Let's Have a Kiki", Scissor Sisters; "National Anthem", Lana del Rey; "Bad Girls", M.I.A.; "Gangnam Style", PSY
Best Live Act: Frank Ocean; the Who; Coldplay; Adele
S T F U Award: Rita Ora; Pixie Lott; Keane; Maroon 5
Hall of Fame: Pink Floyd, Led Zeppelin, The Jimi Hendrix Experience, Joni Mitchell