This page shows a list of the statutory Data Returns required by the DfE and their collection and submission dates. It includes both School and Workforce Census.
There is a drop-down list at the top to see returns from a different academic year, the default is the current academic year:
To see details for each return click on an individual row to go to information:
This will bring up a slide-over form that gives you more detail on each Data Return and allows you to view the census or fix errors for the census by clicking the appropriate button: