Source for dataset “UK Census – Digitised boundary datasets” as listed by CKAN.
Offsite — About > Census area statistics (CAS) provide counts of people or households for geographical areas broken down by socio-demographic characteristics such as age, gender or employment. Digitised boundary datasets (DBDs) are a digitised representation of the underlying geography of the census. Access/Re-use Much of the material says it is Crown Copyright. It must be ...