2021 in British television

	… 2011; 2012; 2013; 2014; 2015; 2016; 2017; ; 2018; 2019; 2020; 2021; 2022; 2023; 2024; ; 2025; 2026; 2027; 2028; 2029; 2030; 2031 …;
	Art; Archaeology; Architecture; Literature; Music; Philosophy; Science; +...

This is a list of events that took place in 2021 relating to television in the United Kingdom.