The words Chelmsford Science Festival 2025 with illustrations representing aspects of science such as robotics, computing and the environment

Chelmsford Science Festival

21 - 28 October 2025, 09:00

Whether you're a curious mind, a budding innovator, or a seasoned expert, there’s something for everyone at the Chelmsford Science Festival 2025.

This year's Festival explores the theme ‘Our AI World – Power and Perils’, diving into the fascinating and fast-evolving world of artificial intelligence. From its transformative potential to the ethical dilemmas it poses, we’ll spark vital conversations about how AI is reshaping our lives. Get ready for an electrifying celebration of science, innovation, and imagination!

The Festival programme is packed with events and hands-on activities spanning science and engineering, health, technology, the environment, business, law, and the arts. See our full family day programme.

Join us in making the Chelmsford Science Festival an unforgettable experience! #ChelmSciFest

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Hack-a-ton 25 (Fall Edition)

Real-world challenges, big prizes & networking: take part in Hack-a-ton 2025. Open to all skill levels. Create, debate & pitch your ideas at ARU, Chelmsford.

  • 1 - 2 November 2025, 11:00 - 18:00
  • Price:  Free
More details and booking for Hack-a-ton 25 (Fall Edition)
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Our partners

Sponsored by:

Teledyne logo

In partnership with:

Chelmsford City Council and Chelmsford 4 You logos


Join us in making the Chelmsford Science Festival an unforgettable experience! #ChelmSciFest