Anglo American Small Arms Ltd, Kingway House, 103 Kingsway, London WC2B 6AW (US Branch: Anglo American, Inc., 1033 North Fairfax Street, Alexandria, VA 22314) published a beautiful catalog in 1999, with .22 Rimfire, Auto Pistol of most major calibers, but including .224 BOZ. 9 x 22 Major (perhaps showing a tie to Hungary), one revolver cartridge, the .38 Special, Sporting rifle cartridges including US, British, German and Russian calibers, along with gun and ammunition steel safes (security cabinets).
Despite this, I have no clue how long they were in business, and have never seen their AA headstamp, to my recollection, on anything but NUPE cases in 9mm Para. I thought I had one in my collection, but a search awhile ago failed to find it.
It would be interesting to know if any of our Forum people know of the AA or any other headstamp from Anglo American in any other calibers, loaded ammo or empty cases.