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Terms and conditions

Please read these terms and conditions carefully. You must agree to them to use or (the census questionnaire). The terms and conditions on this website may change at any time, without notice.

Who we are

The websites and are managed by the Office for National Statistics (ONS). The ONS will be referred to as "we" from now on and both websites as


We have taken care to ensure that the content on is correct. However, no guarantee that it is accurate or fit for any particular purpose is given. We do not accept any liability for error or omission. We are not responsible for how the content is used, interpreted or for any reliance placed on it.

We use security measures to protect the material we control from loss, misuse and alteration. However, we do not accept responsibility for any alteration or manipulation of our content once it has been published.

We may change or remove content from at any time, without notice.

We do not guarantee that will always be available.

Using content on

The content on is subject to the conditions of Crown copyright (opens in a new tab) , unless otherwise indicated.

Reproduction of content is subject to the terms of the Open Government Licence (opens in a new tab)  and the UK Government Licensing Framework (opens in a new tab) .

Virus protection

We make every effort to check and test for viruses. You must make sure that the way you use does not expose you or your computer to risks. This includes viruses, malicious computer code or other forms of interference that can damage your computer system.

We are not responsible for any loss, disruption or damage to your data or computer system that might happen when you use

Security vulnerability

The ONS has a vulnerability disclosure policy to help protect the organisation from potentially unknown and harmful online security vulnerabilities. The ONS vulnerability disclosure policy (opens in a new tab)  provides guidelines on how to report a potential security vulnerability with any of our systems, including

Linking to and from

This website contains links to and from other websites. Where we own these websites, they will have their own separate terms and conditions.

We do not endorse any external websites we link to from and we are not responsible for their content. We provide these links to help you find out further information. We cannot guarantee that links will work or that pages we link to will be available. You should read all terms and conditions, privacy policies and end user licences that relate to these websites before you use them.

Links to other services

We use external services to support Census 2021.

We have integrated the GOV.UK Notify API (opens in a new tab)  (application programming interface) to send out letters, texts and emails. This is how we send you access codes for the census or confirmation emails when you have completed it. You can read about GOV.UK Notify’s security features (opens in a new tab)  and GOV.UK Notify’s own terms of use (opens in a new tab) . We have official sender identities when sending text messages and emails. The text messages we send through GOV.UK Notify come from Census2021. The emails we send through GOV.UK Notify come from

Our supplier, Serco Limited (opens in a new tab) , runs the contact centre for the public. This includes phone calls, web chat, email and a text message service. Serco records calls to the contact centre to improve the service for customers. Our Privacy and data protection statement has further details about this. You can also read Serco’s Privacy Policy (opens in a new tab) . Users of web chat will not receive an automatic transcript of their conversation. To request one, please contact us (opens in a new tab) .

We use an address index when you enter your postcode into the census questionnaire to search for an address, for example, where you live, stay or work. Our address index was created using Ordnance Survey (OS) (opens in a new tab)  data. It is subject to Crown copyright and database rights 2020 OS 100019153. Use of this data is subject to the following conditions by way of exception to the standard Open Government Licence.

Terms and conditions for OS address data

  1. You are granted a non-exclusive, royalty-free, revocable licence solely to view the addressing data for non-commercial purposes for the period during which we make it available
  2. You are not permitted to copy, sub-license, distribute, sell or otherwise make available such data to third parties in any form
  3. Third-party rights to enforce the terms of this licence shall be reserved to OS

The OS copyrights acknowledgements page (opens in a new tab)  provides further information on OS licensing.

You can find out more information about how we use and protect your data collected by any of the services we have integrated into in our Privacy and data protection statement.

Information about you and your visits to

We use cookies and similar technologies to store information about how you use, such as the pages you visit. You can find out further information and choose which cookies you are happy for us to use.