Siren confirms full lineup, local EP launch, extended hours and F&B deals for 2025 return to Bristol Harbourside

Bristol’s iconic Harbourside will once again transform into a city-centre celebration of sound and summer as Siren returns from Friday 25 - Sunday 27 July 2025, with a full weekend lineup just revealed - including an exclusive new digital EP produced in the city and extra local talent on the bill.

Taking over the Amphitheatre on Saturday, Siren welcomes back the ever-popular RUN All Day, delivering a full-throttle drum & bass lineup including viral DnB hitmaker Hedex, crowd-favourite selector Mozey, soulful duo Pola & Bryson and high-energy veterans Basslayerz.

In a festival first, RUN co-founders D*Minds - long-standing legends of the UK DnB scene - have created a digital EP to mark the takeover, featuring exclusive tracks and collaborations with key performers from the day. Artists confirmed on the EP include Crystal Clear, known for his deep, techy rollers; Natty Lou, one of the scene’s rising standout DJs; Run In The Jungle, a Bristol collective pushing underground jungle; and TC, the chart-topping producer behind DnB anthems like “Tap Ho”. The EP will launch across the weekend, with free downloads available to ticket holders.

On Friday, headliners Bloc Party will celebrate 20 years of Silent Alarm, their era-defining debut album that helped shape the UK indie sound of the 2000s. They’re joined by Liz Lawrence, the genre-spanning singer-songwriter known for collaborations with Bombay Bicycle Club and her standout solo records. Also on the bill is Huw Stephens, the BBC Radio tastemaker and champion of emerging talent, bringing a DJ set filled with sharp selections and fresh finds.

Image - Kolab Studios

Adding a distinctly local flavour, Bristol club night Pressure at Thekla - beloved for its alternative and indie anthems - will host a second stage on Friday, spotlighting Bristol’s rich music scene.

Sunday’s extended schedule sees doors opening an hour earlier at 3pm, giving fans more time to enjoy an unforgettable closing set from Sasha & Digweed, pioneers of progressive house and techno, whose legendary B2B sets have headlined everything from Fabric to festivals worldwide.

New for 2025, Siren is also introducing “Happiest Hour Deals” – a daily two-hour window offering discounted drinks (including Thatchers Gold, house spirits, wine and seltzers) and £10 meals from a lineup of independent food traders. This year’s vendors include The Cheese Boys, Stone Baked, Flip and Fry and retro dessert favourites Drifter’s Super Whippy.

Bloc Party is now sold out, with limited tickets remaining for RUN All Day and Sasha & Digweed. For more information and final tickets, visit the Siren website and follow @sirenbristol on Instagram.