Heart of a Coward formed in Milton Keynes in 2009 and became a recognizable name in British metalcore by combining djent-informed precision with groove-heavy songwriting. The early Dead Sea EP and Hope and Hindrance introduced the band's low-end impact, but Severance and Deliverance pushed them into stronger territory with songs like "Hollow," "Distance," "Psychophant," "Shade," and "Mouth of Madness." Jamie Graham's era gave the band a commanding vocal identity, while later material with Kaan Tasan on The Disconnect and This Place Only Brings Death showed a group still capable of balancing punishing riffs with clean melodic release. Heart of a Coward's music is built for weight: palm-muted patterns, syncopated breakdowns, and choruses that rarely soften the mood completely. They fit metalcore scope directly through sound, scene, and touring context, but their best work also draws from groove metal's insistence on physical movement. The band's appeal is less about chaos than controlled pressure. When Heart of a Coward lock into a riff, the songs feel engineered to make a room move as one heavy machine.

Heriot formed in Swindon in 2014 and developed into one of the most exciting British heavy bands of the 2020s by making metalcore feel claustrophobic, industrial, and physically dangerous again. The group's early lineup built the foundation, but Debbie Gough's arrival in 2019 sharpened the band's identity through her guitar work, screams, and visual presence. Profound Morality announced Heriot as more than another revivalist act: the songs fused metallic hardcore, sludge weight, death-metal violence, and noise-scarred atmosphere into compact bursts of pressure. Devoured by the Mouth of Hell expanded that world with tracks like "Foul Void," "At the Fortress Gate," "Siege Lord," and "Opaline," allowing melody and ambience to appear without reducing the threat. Heriot fit metal scope directly through riff density, harsh vocals, extreme dynamics, and their place in contemporary heavy touring. What makes them stand out is control. The band understand space as well as impact, letting silence, feedback, and texture make the heavy sections feel even heavier. Their music sounds less like release than containment finally failing.