Here you'll find a simple user guide and supporting FAQs to help you get the most out of the OS APIs Developer Portal. This service is being improved all the time; please contact us if you cannot find the information you need. OS APIs Developer Portal - User Guide Removal of support for non-SNI compliant clients Security Update - Change to SSL Server Certificate for OS api.ordnancesurvey.co.uk Security Update - TLS 1.0 and 1.1 Retirement OS APIs Developer Portal FAQs OS API Framework Agreement Status API Docs Contact us
