Science leaves the lab. Everyone’s invited.
London · May 2027
Five days of young innovators, industry mentors, and hands-on builds across iconic London venues.
The Builders. London. 2027.
Five days. One city. The country’s boldest young builders, face to face with the people who hire, fund, and build what’s next — hands-on demos, mentor roundtables, and programming for every age. More champions and partners announced as we get closer to May.
One festival. Four London landmarks.
The Festival moves through some of London’s most recognisable spaces — from Westminster and the skyline to Waterloo’s creative underground and the historic RSA House.
Houses of Parliament
An unmistakable London setting for ideas with national ambition.
The Shard
A skyline venue that puts the future of STEM above the city.
RSA House
A historic home for bold thinking, collaboration, and social progress.
26 Leake Street, Waterloo is featured in the hero image above and hosts the Open Build Days.
This could be you.
Up to 40 National STEM Champions will be chosen for London 2027 — each winning a funded trip to present their project, meet industry leaders, and join exclusive experiences. The 2027 Champions haven't been chosen yet. Pre-register to enter.
Two days. Open to everyone.
A free, all-ages weekend of hands-on STEM — come build, experiment, and meet the innovators shaping what comes next, in the heart of London.
- WhenSaturday, May 8 & Sunday, May 9, 2027
- Where26 Leake Street, London
Free to attend · no registration required. Full programme announced closer to the Festival.
The people shaping the conversation.
The scientists, communicators, and innovators joining us in London — with more to be announced.
Dallas Campbell
Science Communicator, Television Presenter & Author
Dr. Tracy Fanara
Coastal Modeling Portfolio Manager, NOAA · Creator, "Inspector Planet"
Maynard Okereke
"Hip Hop M.D." — Science Communicator
Dr. Owais Durrani
Emergency Medicine Physician & Medical Analyst
Confirmed for London 2027.
The organisations backing the UK Edition — with more to be announced.
Partner logos coming soon. Interested in partnering on the London Festival? Explore partnership →
Getting Champions to London.
Talent is everywhere. Travel money isn’t. Every selected National STEM Champion receives a funded 5-night / 6-day trip to London for themselves and a parent or guardian — travel and accommodation arranged by EXPLR, worth up to £2,000. No Champion misses the Festival because of cost.
Want to help more students get to London? Support the fund →