Sifiso Mazibuko (Photo: Instagram/Sifiso Mazibuko)
Sifiso took home the award for Best Long-running West End Show Performer (Male) for his role in Hamilton.
"Thank you to everyone who voted for me in this. Needless to say, it is a beautiful end to my journey with the show so THANK YOU ALL!!" Sifiso tweeted on Monday.
Other winners of the awards included Hollywood star Tom Hiddleston for Best Actor in a New Production of a Play and the show Kinky Boots for Best New Regional or Touring Production.