Entertainment Tweet by @SheffCityHall Published June 17 2021 10:00 AM Mathematician-turned-World-Slam-Champion Harry Baker will perform at Sheffield City Hall on Thursday 28 October 2021.Tickets on sale Friday 18 June at 10am 🎟More info & tickets 👉 https://t.co/aJXUqKGsQL, — Sheffield City Hall (@SheffCityHall) June 17, 2021 09:00