Went to Download festival last weekend which was good fun - got some recommendations from a couple of mates who are more clocked on with the heavier scene than me nowadays - So on my list to see at Glastonbury are:
The Hu
Nova Twins - good at Download
Elvana - this shouldn’t work yet amazingly does, such a fun set at Download
Kid Kapichi - excellent at Download
Skindred
Empire State Bastards
Obviously a lot of other standard rock acts planning to see - Guns & Roses, The Hives, Courteeners, Royal Blood, Arctic Monkeys, Editors, Manic Street Preachers, QOTSA, etc