# The Local Authorities (Conduct of Referendums) (England) Regulations 2007, Paragraph 9: The official mark


(1) Every ballot paper must contain an appropriate security marking (the official mark).
(2) The official mark must be kept secret.
(3) The counting officer may use a different official mark for different purposes at the same referendum.

---
Source: https://www.legislation.gov.uk/ukdsi/2007/9780110770642/schedule/3/paragraph/9 (the official version)
Page: https://openlegislation.uk/draft-local-authorities-conduct-of-referendums-england-regulations-2007/schedule-3/paragraph-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.