Delivering the annual canvass - England

The elector number of an anonymous elector may change when you republish the electoral register following the conclusion of the annual canvass.

If an anonymous elector’s electoral number has changed and they have an Anonymous Elector’s Document, you must notify them that their electoral number has changed, that their Anonymous Elector's Document is no longer valid and that you will issue them with a new Anonymous Elector's Document. 

For more information see our guidance on Replacement of an Anonymous Elector's Document where the elector number has changed.