Here are Australian-available cat‑food brands that emphasise natural ingredients and advertise little or no artificial additives. I’ve listed the brand plus the key “no‑additive” claim and a source you can check.

• Ivory Coat — Australian brand; recipes state “no added artificial colours, flavours or preservatives” and use Australian meat as the first ingredient. (ivorycoat.com.au)
• Black Hawk — Australian‑made; markets “premium, natural ingredients” and says it uses natural preservatives (rosemary extract, mixed tocopherols, vitamin E/C) rather than synthetic preservatives. (blackhawkpetcare.com)
• ZIWI Peak — New‑Zealand air‑dried recipes with very high meat content; positioned as “100% natural” with no fillers and preserved with natural tocopherols / gentle processes. (ziwipeak.com.au)
• Feline Natural — NZ freeze‑dried & canned cat foods (high meat, prey‑style formulas); marketed as grain‑free and free from artificial colours, flavours and preservatives. (au.felinenatural.com)
• K9 Natural / Feline (K9 brand’s cat range) — NZ brand (freeze‑dried and canned) that markets minimally processed, high‑meat recipes without grains or common fillers. (au.k9natural.com)
• ORIJEN (Champion Petfoods) — “Biologically Appropriate”, very high animal‑ingredient recipes; company states no added artificial colours/flavours/preservatives. Widely available in Australia. (apac.orijenpetfoods.com)
• ACANA (Champion Petfoods) — similar philosophy to ORIJEN; recipes state artificial colours, flavours or preservatives are never added. (pikapet.com.au)
• Pure Life (Pure Life Natural Boost) — Australian brand that advertises “no fillers, artificial colours or preservatives” and high Australian ingredient content. (purelifepetfoods.com.au)
• Somerford Raw & Natural — Australian raw food maker that advertises raw, human‑grade ingredients and “free from grains, preservatives & artificial colourings.” (somerfordrawandnatural.com.au)
• Meals for Mutts (MfM) — Australian‑made range that says its products are “free from GMOs, preservatives, additives or artificial flavourings.” (mealsformutts.com.au)

Quick tips when you shop

• Read the ingredient list and guaranteed analysis rather than only marketing claims. Small print will show added vitamins/minerals (normal) and any preservatives (natural ones often listed as “mixed tocopherols,” citric acid or rosemary extract). (blackhawkpetcare.com)
• Consider format (wet, freeze‑dried, air‑dried, raw): air‑ or freeze‑dried and fresh‑frozen/raw options often use less synthetic preservation but cost more. (ziwipeak.com.au)
• If your cat has health issues (kidney, urinary, allergies), check with your veterinarian before switching to a high‑protein, grain‑free or raw diet.

If you’d like, I can:

• pull the exact ingredient panel for any one of these brands/packages, or
• shortlist 2–3 options that match your cat’s life stage (kitten/adult/senior) or budget.