One Direction took home 3 prizes, including the Best British Single for "One Thing" (which they played at the ceremony), Best British Album, and Best British Music Act.
The guys had some really sweet things to say for their Directioners when they received the award:
"Guys, this is absolutely amazing. We have to start off by thanking our amazing fans. It's been an unbelievable two years for us. This award's for you."
Taylor Swift also performed, but she didn't take home a single prize. She was still one of the stars of the night, and played lots of her big hits. She also sang her new song "Red' for the first time live.
Little Mix did a great performance too!
Here's the list of winners:
And here are the performances:
Taylor Swift perfoming "Red" for the first time live.
One Direction performing "Up All Night":
Little Mix performing "Wings":