Consideration of impact of proposed guidance for 2021 census on data quality

The request was successful.

Dear Office for National Statistics,

Please provide details of all work undertaken specifically to consider the potential impact of the proposed guidance to accompany the sex question* in the 2021 census on the quality of analysis that will be possible using census data in relation to sub-groups, particularly those where existing evidence suggests a higher than average rate of transgender identities.

For example, a survey undertaken by HM Chief Inspector of Prisons revealed that 1 in 50 male prisoners in England and Wales identify as transgender. The Tavistock and Portman NHS Trust claims that between 1.2% and 2.7% of children and young people are ‘gender-diverse’.

Yours faithfully,

L Mackenzie,

Workflow Notification


Thank you for your FOI request. We can confirm that your request has been
received and is being dealt with. We will aim to respond to your request
as soon as possible, and no later than 20 working days from when we
received your request. However, due to the current COVID-19 emergency, we
are experiencing some delays in processing requests and it may not be
possible to respond within the 20 working day statutory deadline. Should
this be the case with your request, we will keep you informed.

Should you have any further questions please do not hesitate to contact us
at [1][ONS request email]

Yours Faithfully
Freedom of Information Team
Office for National Statistics

show quoted sections

FOI Team, Office for National Statistics

Our Reference: FOI/2020/0443


Dear L,


Thank you for your email requesting data pertaining to the work undertaken
to consider the impact of the guidance for the Census 2021 sex question.


I am writing to confirm that the Office for National Statistics has now
completed its search for the information which you requested and the
response can be found here:



You have the right to have this response to your Freedom of Information
request reviewed internally by an internal review process and, if you
remain unhappy with the decision, by the Information Commissioner. If you
would like to have the decision reviewed please write to The FoI Team,
Room 1100, Office for National Statistics, Segensworth Road, Titchfield
PO15 5RR, and mark your correspondence "Internal Review".

If you have any queries about this email, please contact the Freedom of
Information Team ('[ONS request email]').

Please remember to quote the reference number above in any future


Freedom of Information Team

Office for National Statistics


For information on Coronavirus, please visit [2]



For the latest data on the economy and society, consult our
website at [3]

show quoted sections

Legal Disclaimer:  Any views expressed by the sender of this message are
not necessarily those of the Office for National Statistics


Visible links