OxHack 2026 Oxfordshire, United Kingdom Oxford's student led hackthon Non-monetary prizes Oct 24 – 25, 2026 356 participants
OpenAI Build Week Online Join a global week of building with Codex $100,000 in prizes Winners announced 46672 participants
Leaf Hacks 26' Greater London, United Kingdom A Sixth Form/College hackathon designed to push your limits. Create, collaborate, and innovate with the brightest minds. $200 in prizes Jul 4, 2026 72 participants
Design and Development Hackathon West Midlands, United Kingdom Work in a team to build solutions to tackle real world problems faced by SMEs Non-monetary prizes Apr 7 – 8, 2026 24 participants
Hack Keele X Stem Hackathon 2026 Keele, United Kingdom Keele's 2026 Stem X Hack Hackathon Non-monetary prizes Mar 29, 2026 4 participants
HackLondon 2026 Greater London, United Kingdom The annual hackathon of the world's greatest city. Hosted by KCL and UCL Non-monetary prizes Feb 21 – 22, 2026 230 participants
brainrot jia.seed hackathon ($5,772) in prizes Online make a project and i will see if it is epic or not $5,697 in prizes Winners announced 1188 participants
