Yes, that's the one - I don't know the details, but there is/were links with Kynoch and Eley. ICI used to make 22 rimfire ammo, apparently changed name to IMI.

Have a look at what I found via google:

http://22box-id.com/world/australia.pdf

and this

http://www.gunsinternational.com/ICI-High-Velocity-22-LR-Ammo.cfm?gun_id=100437738