Hi there
My husband and I are working towards a move to Melbourne this winter. He's a physio and to complete his registration with AHPRA, he needed to have his documents for the registration form signed by a notary (previously, for other parts of the process, a solicitor's signature on other documents was fine). The form stipulated either notary public or justice of the peace. We had considered chancing it with a solicitor, but if gets knocked back, it could cost us another 6 weeks and we didn't want to risk it.
Today, our local notary signed and stamped all of his documents today for £84 - with a proper posh stamp and everything. You can find a notary at http://www.thenotariessociety.org.uk/find-a-notary