Brits organisers also said sorry: "We regret this happened and we send deepest apologies to Adele that her big moment was cut short due to the live show overrunning.
"We don't want this to undermine her incredible achievement in winning her awards."
Her album, 21, is the biggest-seller of the 21st century, shifting 17 million copies so far. Since the release of 21, Adele has overcome throat surgery which threatened to cut off her career in its prime.