This may have been covered before, but:
Did mine the other day - confused by the discrepancy about who can certify your documents and photos (ASA website lists about a squillion different people, ID renewal form says only JP or Airport manager), so I rang the Airservices help line.
Helpful girl says:
"Yes, you can use the one with the long list, you know, where it just about goes down to your dog".
Good to see a sense of humour, made the process a little less nauseating.