It strikes me that someone should make Humberside Police aware of the Gender Recognition Act 2004:
Section 22: Prohibition on disclosure of information
subsection 4c: But it is not an offence under this section to disclose protected information relating to a person if—
the information is protected information by virtue of subsection (2)(b) and the person by whom the disclosure is made does not know or believe that a full gender recognition certificate has been issued,
www.legislation.gov.uk/ukpga/2004/7/section/22
See also Section 9 Explanatory Notes, subsection 28:
"Subsection (2) provides amplification of subsection (1), making clear that the recognition is not retrospective, so the certificate does not rewrite the gender history of the transsexual person, and that the new gender applies for the interpretation of enactments, instruments and documents made before as well as after the issue of a certificate"
www.legislation.gov.uk/ukpga/2004/7/notes/division/4/9