Dataset - UK Data Service CKAN

England and Wales Census 2021 - RM150: Ability to speak Welsh by national ide...

This dataset provides Census 2021 estimates that classify usual residents in Wales aged 3 years and over in Wales by ability to speak Welsh, by national identity, and by age....
- XLSX
- CSV
- JSON
England and Wales Census 2021 - RM112: Proficiency in English by economic act...

This dataset provides Census 2021 estimates that classify usual residents aged 16 years and over in England and Wales by proficiency in English and by economic activity status....
- XLSX
- CSV
- JSON

You can also access this registry using the API (see API Docs).