After 21 months, the curtain came down on the singer’s Eras Tour last weekend.
The festive classic fought off competition for the top spot from Mariah Carey and Tom Grennan.
In April, the 21-year-old made U.K. chart history by becoming the first British rapper to chart their first two singles simultaneously.
The Newcastle musician previewed his upcoming LP People Watching at The O2 Arena on Tuesday night (Dec 10).
Other previously announced acts include Jordan Adetunji, Alessi Rose and Antony Szmierek.
The run of shows follow the singer/guitarist's surprise sixth studio LP, No Name.
All tickets for the event are free and will be distributed via charities and community organisations.
