I have written a script to download a dataset containing collection information from the UK Government Art Collection site and save it in tab-seperated-value files and an sqlite database for easy access. As the data is from a UK government agency it’s under the OGL.
You don’t need to run the script, a downloaded dataset is included in the project archive:
https://github.com/rheaplex/government-art-collection/
https://github.com/rheaplex/government-art-collection/trees/master/2011-12-11
The dataset doesn’t feature as many collections as the GAC website claims to feature, but the script does omit many duplicates. This project was inspired by Kasabi’s scraper, adding the ability to download code and data in an easy-to-use format.