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Best Summer Festivals In London 2026

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By katie kirwan • Head Of Brand & B2C At DesignMyNight Nightlife and hospitality expert with 13 years of experience and coverage in The Times, Time Out and Bar Magazine. Last updated on 24th July 2026

Festivals come in all shapes and sizes, but one thing's for certain: all the best ones can be found in the heart of summer. The city has so many for you to pick, from dancing in a field with spectacular music to food and wine fiestas. Whatever one you fancy, you are bound to find something you love in our recommended list of London summer festivals for 2026.

Lost Oasis

@ Courtyard at St Martin-In-The-Fields on Tuesday 8th September 2026 and 4 other dates

While muddy fields outside the M25 have their charm, one of the best summer festivals in London 2026 is actually happening right in Zone 1. Lost Oasis brings the festival energy to St Martin-In-The-Fields with a month-long celebration of music, culture, and world-class gastronomy.

This urban festival pulls out all the stops when it comes to production. Between exploring the stunning landscape design, festival-goers can sample incredible chef residencies, pour fresh pints directly from a giant sculptural cider tree, or catch exclusive summer screenings. 

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Waterworks Festival 2026

@ Gunnersbury Park on Saturday 12th and Sunday 13th September 2026

Round of the summer with Waterworks Festival this September, returning to Gunnersbury Park for its sixth year. This independent event promises two days of fun, with multiple stages showcasing progressive club culture.

Expect a mix of house, techno, breaks, bass and sound system music. On the lineup? Everyone from Free Zing to Modeselektor, Decibella and Skala.

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