You don't need to use deed poll to change your name, you can rely upon a
change of name deed which can be prepared by your solicitor.
When a woman marries her name changes to the married name even if the
maiden name is retained which is why in question 1 on the latest version of
the divorce
petition you have to state that your name has changed
since marriage if you retained the maiden name once married.
If
you used a married name during the marriage presumably all documentation
will be in that name therefore a document proving change of name should be
obtained to change dirving licence, passport etc.
Charles