Thanks for the reply!
However I think you might be mixed up with the older L1A1/2/3/4 type bayo for the SLR? (I do actually have an unmarked Aussie L1A2 bayonet).
I'm meaning the current issue bayonet (the ugly looking bayo!!!) for the L85/SA80. That said I know nowt about Aussie weaponery so maybe they also currently use the L3A1??
Cheers.