• Why the census is so important, and what and where we’re testing.

  • Everything you need to know about how to fill in your form, and help with answering the questions.

  • Contact us, troubleshooting guide, and help available in other languages.

  • Your confidentiality is our highest priority.

  • If you can't find what you need, call our helpline.

  • We have sent out reminders about the 2017 Census Test in England and Wales.

If you’ve received a letter, you can take part in the test. We’re dependent on the goodwill and time of the public when we run our tests. We understand that modern life places many demands on us all, and we do not take your contribution lightly.