Layered buttercream chocolate cake

MILK CHOCOLATE (239%) (Sugar, Cocoa Butter, Cocoa Mass, Skimmed Milk Powder, Milk Fat, Palm Oil, Shea Fat, Emulsifiers: Lecithins (Soya), Polyglycerol Polyricinoleate; Whole Milk Powder, Flavouring), Sugar, Wheat Flour, WHITE CHOCOLATE (11%) (Sugar, Cocoa Butter, Whole Milk Powder, Flavouring, Emulsifier: Lecithins (Soya)), Butter (Milk), Pasteurised Egg, DARK CHOCOLATE (4%) (Sugar, Cocoa Mass, Cocoa Butter, Emulsifier: Lecithins (Soya)), Fat Reduced Cocoa Powder, Humectant: Glycerol; Water, Glucose Syrup, Cocoa Mass, Dried Glucose Syrup, Palm Oil, Whey Powder (Milk), Raising Agents: Diphosphates, Potassium Carbonates; Cocoa Butter, Emulsifiers: Mono-and Diglycerides of Fatty Acids, Polyglycerol Esters of Fatty Acids, Lecithins (Soya); Whole Milk Powder, Rice Starch, Maize Starch, Acidity Regulators: Sodium Acetate, Calcium Lactate, Acetic Acid; Preservative: Potassium Sorbate; Plant Extracts (Beetroot Juice from Concentrate, Concentrated Grape Juice, Radish Concentrate, Safflower Extract, Spirulina Concentrate), Glazing Agents: Beeswax, Carnauba Wax, Gum Arabic, Shellac; Salt, Dried Egg White, Stabiliser: Sorbitols; Barley Malt, Lemon Juice Concentrate, Flavouring, Colour: Beetroot Red.