The choice of which option to use is at your discretion and will depend on the particular situation.
In all cases, you must send a notice to the elector, containing the relevant information for the review type as set out in the guidance for each type of review.
For each type of review, the form of the notice to be given is not prescribed but the content is. Irrespective of which type of review you are undertaking, you must inform the elector of the grounds on which you are reviewing their registration.1