TheEOS Hackathon in Londonwas one of a series of two day events held on 22 to 23 September 2018 in London, United Kingdom. It was held at the Science Museum and aimed to bring together developers and entrepreneurs to build innovative solutions on top of theEOS.IO blockchainsoftware.  The event was organized by AngelHack and Block.one.
London Hackathon Challenge
The Hackathon Challenge was announced on the day of the event. Participants were encouraged to start getting familiar with documentation on the EOS.IO Developer Portal and to get involved with the community through their EOS.IO social channels and Telegram groups.
The challenge released to the participants reads as follows: 
Create an applications on the #EOSIO platform that improves the relationship between technology and a user's privacy or security.
Saturday, September 22
8:30 - 10:00Doors Open & Breakfast Served
12:00 - 13:00Lunch Served
12:00 - 12:30Breakout Session 1 - Technical Breakout (C++)
13:00 - 13:30Breakout Session 2 -Technical Breakout (Web/UX)
14:00 - 14:30Breakout Session 3 - Entrepreneurial
18:00 - 19:00Dinner Served
20:00 - 20:30Breakout Session 4 - Pitch Workshop
24:00Midnight SnackHack Through the Night
The venue will be open and staffed overnight for participants to hack through the night.
Sunday, September 23
7:30 - 8:00Breakfast Served
9:00 - 10:00Breakout Session 5 - Pitch Practice
12:00 - 13:00Lunch Served
14:00 - 16:00Round 1 Judging (3 min pitches)
16:00 Doors Open for Individuals with Spectator Tickets
16:30Closing Ceremony & Top 10 Teams Announced
16:45Round 2 Judging
18:30Networking Drinks & Dinner
All event times are in BST/GMT (local time).
Shane KehoeCo-Founder, SVK Crypto
- First Place: US$100,000 – EoShield
- Second Place: US$25,000 - Chestnut
- Third Place: US$10,000 - On the Block
- Best Social Impact - US$3,000 - GeneOS
- Best User Experience - US$3,000 - Chestnut
- Best Social Media Post - US$3,000 – CyberCode Twins
Following the London Eos Hackathon, Reddit user throwawayeoshack posted their experience of being in a contending team. The post titled 'The only question I was asked by a juror in the EOS hackathon' details the experiences of the users team and leads them to conclude a significant discord between what team mentors advise and understand and what the Block.one judges and executives envisioned for the hackathon. The reedit thread associated with the post discusses the reasons why throwawayeoshack may have felt that the judges evaluated winners on the potential profitability of an app over its utility and design.