You asked
How much have the follow-up letters for the Census 2021 cost?
Please disclose the salaries of Ian Diamond and the Senior Management Team.
What is done with Census 2021 information?
We said
Thank you for your request.
Please see the following previously answered FOI, which provides the cost of the follow-up letters for the 2021 Census: Cost of Census 2021 reminders - Office for National Statistics (ons.gov.uk)
The salary bands for Sir Ian Diamond and each member of the Senior Management Team can be found in pages 82 to 84 of the following published document: UKSA Annual Report.
On the ONS website we have described some of key ways in which census data is used. This is available at the first of the links below. The second link below is to the White Paper presented to Parliament in December 2018 which includes a particularly useful foreword by Sir David Norgrove (Chair of the UK Statistics Authority) on the importance of the statistics that are provided by the census:
https://www.ons.gov.uk/census/censustransformationprogramme/aboutthecensus