Art UK is a cultural, education charity in the United Kingdom, previously known as the Public Catalogue Foundation. Since 2003, it has digitised more than 220,000 paintings by more than 40,000 artists and is now expanding the digital collection to include UK public sculpture. The catalogues and website allow readers to see an illustration, normally in colour, and short description of every painting in the UK's national collections. This information has significant educational benefits and constitutes the building blocks for later art historical research.