The Public Accounts Committee is carrying out an enquiry into challenges using data across government:
www.parliament.uk/business/committees/committees-a-z/commons-select/public-accounts-committee/inquiries/parliament-2017/inquiry37/
Members of the public have until this Thursday (11th) to make written submissions so, if anyone has any comments or examples of issues caused by government departments using self-identified gender rather than sex in its statistics, please submit a response. It doesn't need to be a comprehensive response covering all possible issues, as I think that would be a bit challenging given the deadline but hopefully if a few of us raise this issue with a range of examples, that will give them something to think about.