Registered offenders: contact the police before the change
The general GOV.UK deed poll page states that registered sex, violent and terrorist offenders must notify the police within three days of a name change. GOV.UK: changing your name by deed poll
There is an important 2026 development: the Home Office’s Crime and Policing Act factsheet describes advance name-change notification and a power to require police approval for changes on specified identity documents. It also refers to the existing three-day rule. The factsheet alone does not establish when each provision applies in every jurisdiction. Home Office: Crime and Policing Act 2026 offender management factsheet
If you are affected, do not treat “three days afterwards” as a safe universal deadline. Ask the supervising officer or solicitor to confirm the operative requirements, any advance notice and any approval needed before you sign, use a new name or apply for identification. This guide does not confirm commencement of each 2026 provision.