Festivalen blev planlagt fra 11 aug til 15 aug 2021 (4 dag(e)).
Bloodstock Open Air finder sted i Walton upon Trent, United Kingdom. Her er den fulde adresse på festivalen: Catton Hall and Gardens, Walton-on-Trent
Judas Priest, Cradle of Filth, Kreator, Devin Townsend, Paradise Lost, Saxon, Napalm Death, Skindred, While She Sleeps, Gloryhammer, Therapy?, Bleed From Within, Orange Goblin, Malevolence, The Wildhearts.
De mest populære genrer og undergenrer i den foregående udgave var:
heavy metal
rock
punk
metal
thrash metal
hardcore
death metal
black metal
hardcore punk
thrash
hard rock
grindcore
power metal
progressive metal
doom metal
speed metal
alternative
english
groove metal