Simon Willison’s Weblog

Doing things with Ordnance Survey OpenData. Jo Walsh’s guide to processing Ordnance Survey OpenData using PostgreSQL and PostGIS.

Posted 20th May 2010 at 3:22 pm

Recent articles

My Lethal Trifecta talk at the Bay Area AI Security Meetup - 9th August 2025
The surprise deprecation of GPT-4o for ChatGPT consumers - 8th August 2025
GPT-5: Key characteristics, pricing and model card - 7th August 2025

mapping 54 open-data 15 ordnancesurvey 3 postgis 6 postgresql 151 recovered 213 jo-walsh 1

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