I wouldn't. They really do have a lot of ingredients in compared to just Greek yogurt
Petite Filous:
Raspberry: Fromage Frais (Skimmed Milk, Cream, Lactic Cultures), Sugar (6.2%), Raspberry Purée from Concentrate (5%), Fructose (3.1%), Carrot Juice, Corn Flour, Lemon Juice, Milk Mineral Concentrate, Natural Flavouring, Vitamin D, Strawberry: Fromage Frais (Skimmed Milk, Cream, Lactic Cultures), Sugar (6.2%), Strawberry Purée from Concentrate (5%), Fructose (3%), Carrot Juice, Corn Flour, Lemon Juice, Natural Flavouring, Milk Mineral Concentrate, Vitamin D.
Rachael organic Greek yogurt:
Organic Natural Yogurt (from Milk)
You also pay way more per 100g.
Petite Filous -53p per 100g
Basic Greek yogurt -24p per 100g
Organic Greek yogurt -40p per 100g