Slam Dunk and ArcTanGent reveal first headline acts for 2027 editions

# What was announced

Slam Dunk and ArcTanGent have released the first groups of artists confirmed for their 2027 festivals. Both reveals cover headline slots and a sizeable early wave of supporting acts. The two events sit in different parts of the UK festival calendar: Slam Dunk across the bank holiday weekend in late May, and ArcTanGent in August at a new Cotswolds site.

# Slam Dunk 2027: dates, headline names, ticket windows

Slam Dunk's announced artists are booked for the weekend of May 29 (Leeds, Temple Newsam) and May 30 (Hatfield Park). Headline and high‑profile names in this initial wave include Bowling For Soup, Killswitch Engage, Simple Plan, Sleeping With Sirens, Reel Big Fish, Less Than Jake, The Interrupters, The Used, Hot Milk, Four Year Strong and Beartooth. The organiser says more artists will be announced in coming weeks.

Ticketing notes provided with the announcement:

Attendees should use the festival's official channels for full line‑up updates and ticket purchase links.

# ArcTanGent 2027: move to the Cotswolds and confirmed headliners

Additional artists announced for ArcTanGent's first Cotswolds edition include Slift, The Ocean, Messa, Conjurer, The Wildhearts (performing a special progressive set), Holy Fawn, Møl, Employed To Serve and Lowen, along with other names that round out an extensive heavy and progressive lineup.

Scarlett also noted that the festival is releasing much of its Wednesday early‑entry line‑up and bringing back acts that drew large crowds in 2026.

# What this means for fans

Fans of alternative, punk, emo and heavy prog have two sizable line‑up drops to follow. Slam Dunk's announcement targets the late‑spring crowd with cross‑genre appeal, while ArcTanGent's reveal focuses on heavier, progressive and experimental acts suitable for its dedicated niche audience at a new site.

Plan ticket purchases around the specified pre‑sale and general sale dates for Slam Dunk, and monitor ArcTanGent's channels for further line‑up and ticket details as the festival prepares for its Cotswolds debut.