An evergreen list of useful collections of data in the UK health and care system.
NHS Data Model and Dictionary
NHS Digital publishes a guide to the data model and dictionary used in the NHS.
Organisation Data Service
There is a central directory of NHS organisations in England that is maintained by NHS Digital.
NHS Digital Organisation Data Service
There are a number of code repositories that people have created to collect and organise this ODS data.
Python pandas datareader for ODS
NHS Business Services Authority (NHSBSA)
A central NHS organisation which is very open about its tech and data and has an extensive presence on Github.
NHS Business Services Authority on Github
NHSBSA offers an Open Data Portal
There is a code repository for NHSBSA Open Data analytics.