Swearing a declaration of solvency before overseas lawyer?

I have a prospect who is the director and shareholder of an English company but he lives in Australia.  It seems that an Austraian lawyer can swear this under Commissioners For Oaths Act 1889.

That Act says, at s.3(1) that; 

(1) Any oath or affidavit required for the purpose of any court or matter in England, or for the purpose of the registration of any instrument in any part of the United Kingdom, may be taken or made in any place out of England before any person having authority to administer an oath in that place.
Can anyone confirm whether an ordinary Australian lawyer can therefore witness the swearing or does it need to be a notary?
Many thanks