To
                provide evidence of who you are and when and where you
                were born, together with evidence that you are free to
                marry again if you have been married before, you must
                show your celebrant official documents. However, a scan of the original document (birth
                  certificate or passport) is acceptable as proof of
                  when and where you were born.
                
A scan of your photo ID sent via email is NOT
                  acceptable. Your celebrant needs to be able to compare
                  you with your photograph, so confirmation of identity
                  needs to be done in person!