Smith accepted the award for Best Original Song with his co-writer Jimmy Napes. "I genuinely didn't think we were going to win at all," he later said. "We're in complete shock. The whole thing's just amazing."
Describing himself as feeling "overwhelmed, happy, insecure - all those things at the same time", Smith added: "It's only downhill from here... I'm going to retire, I'm done with music!"
