A vibrant hidden rainbow layer cake concealed beneath a smooth Belgian chocolate Swiss meringue buttercream exterior. Features five colourful vanilla sponge layers topped with piped swirls, sprinkles, and Maltesers. Delivered in London.
Chocolate rainbow birthday cake showing smooth chocolate buttercream finish, delivered in London

Chocolate Rainbow Birthday Cake

£100.00 - £277.00

Our Chocolate Rainbow Birthday Cake brings a burst of colour under a properly indulgent chocolate finish: five layers of vibrant vanilla sponge in rainbow hues, wrapped in silky Belgian chocolate Swiss meringue buttercream and topped with elegant swirls, sprinkles and Maltesers. It is where chocolate indulgence meets rainbow joy.

Made to order · Hand-delivered · London & Surrey

Decorations: Hand-piped swirls made with smooth Belgian chocolate Swiss meringue buttercream, sprinkles and Maltesers.

Cake Sponges: Five layers of vanilla sponge, each in a different rainbow colour: pink, yellow, green, blue, and purple.

Frosting: Filled and covered with Belgian chocolate Swiss meringue buttercream, renowned for its silky smooth texture and naturally low sugar content for the perfectly balanced flavour profile.

Cut into a great big chocolate cake, but find a rainbow inside. I love that little surprise: the outside promises chocolate, then the slice delivers full birthday theatre.

The Chocolate Rainbow Birthday Cake feels like a party on a plate. It is vibrant, fun and full of joy, with the Belgian chocolate buttercream adding enough depth to stop it feeling too childish.

What sets this cake apart is the contrast of smooth, rich chocolate buttercream with bright vanilla sponge. It is made for milestone birthdays, colourful celebrations and chocoholics who want something more exciting than a standard chocolate cake.

Sponges: Flour (wheat, gluten), sugar, egg, milk, buttermilk (milk), yoghurt (milk), sunflower oil, baking powder, vanilla extract, salt, colouring Pink (Glycerol, Propylene, Glycol, E551, Food Colour: E104, E155, E129), colouring Yellow (glycerol E422, propylene glycol E551, colours E104 & E110), colouring Green (Glycerol, Propylene, Glycol, E551, Food Colour: E104, E133), colouring Blue (glycerol E422, propylene glycol E1520, silicon dioxide E551, water, colours E133 & E122), colouring Purple (Glycerol, Propylene, Glycol, E551, Food Colour: E122, E133)

Buttercream: Sugar, egg white, butter (milk), vanilla extract, cocoa, salt

Decorations -

Maltesers: Sugar, Skimmed Milk Powder, Cocoa Butter, Glucose Syrup, Barley Malt Extract, Cocoa Mass, Palm Fat, Lactose and Protein from Whey (from Milk ), Whey Powder (from Milk ), Milk Fat, Emulsifiers (Soya Lecithin, E492), Wheat Flour, Palm Kernel Fat, Palm Kernel Oil, Raising Agents (E341, E500, E501), Wheat Gluten, Salt, Glazing Agent (Pectin), Natural Vanilla Extract, Milk Chocolate contains Milk Solids 14% minimum, Milk Chocolate contains Vegetable Fats in addition to Cocoa Butter, Sugar, Cocoa, Vanilla).

Jimmies: Sugar, Corn Starch, Hydrogenated Palm Oil, Dextrin, Soy Lecithin, Colours: E102, E110, E120, E129, E133, Glazing Agent: Shellac, Carnauba wax.

*The colours used across the entire icing colouring range may include the colours E102, E104, E110, E122 & E129 - which may have an adverse effect on activity and attention in some children.

All products are produced on premises handling eggs, wheat, gluten, nuts, peanuts, milk, sesame and soya hence may contain traces. Please note cakes may contain cocktail sticks and dowelling for support - remove before serving.

Allergens: 🌾 Wheat (gluten), 🥚 Eggs, 🥛 Milk (dairy), 🌱 Soya, 🥜 Nuts and Peanuts. All our cakes are handmade in a kitchen that handles these allergens every day.

For this reason, we cannot in good faith label any cake as truly “free-from” or vegan — achieving that level of separation would require entirely separate premises. If you have a severe allergy, we recommend speaking to us before ordering so we can advise you personally.

London & Surrey

Delivery & Service

Every cake is baked to order in our London kitchen, then hand-delivered by our own team. Complimentary delivery is included across London & Surrey, with live tracking and careful temperature-controlled handling from bakery to doorstep.

Delivery days
Tuesday, Thursday, Friday & Saturday · 8am–5pm
Tracking
Precise time window sent on the morning of delivery
Concierge support
Contact our concierge on WhatsApp for next-day or urgent availability

Cake Care

Serving & Storage

Your cake is baked fresh for your chosen date and keeps beautifully for up to five days from delivery. Store it carefully, serve it at room temperature, and the sponge and buttercream will be at their best.

Shelf life
Best enjoyed within five days of delivery.
Storage
Keep boxed in a cool room, or refrigerate if not serving the same day.
Serving
Bring to room temperature for around three hours before serving.

FAQs

We deliver across London and Surrey using our own in-house drivers, so your cake is handled carefully from our kitchen to your door.

Deliveries run between 8am and 5pm. On the morning of delivery, you’ll receive a more precise time window with tracking where available.

Yes. Delivery is included across London and Surrey, with no third-party courier handling.

Your cake is baked fresh for your chosen date and keeps beautifully for up to five days from delivery when stored correctly.

Search

Our Chocolate Rainbow Birthday Cake brings a burst of colour under a properly indulgent chocolate finish: five layers of vibrant vanilla sponge in rainbow hues, wrapped in silky Belgian chocolate Swiss meringue buttercream and topped with elegant swirls, sprinkles and Maltesers. It is where chocolate indulgence meets rainbow joy.

Decorations: Hand-piped swirls made with smooth Belgian chocolate Swiss meringue buttercream, sprinkles and Maltesers.

Cake Sponges: Five layers of vanilla sponge, each in a different rainbow colour: pink, yellow, green, blue, and purple.

Frosting: Filled and covered with Belgian chocolate Swiss meringue buttercream, renowned for its silky smooth texture and naturally low sugar content for the perfectly balanced flavour profile.

From the Chef

Cut into a great big chocolate cake, but find a rainbow inside. I love that little surprise: the outside promises chocolate, then the slice delivers full birthday theatre.

The Chocolate Rainbow Birthday Cake feels like a party on a plate. It is vibrant, fun and full of joy, with the Belgian chocolate buttercream adding enough depth to stop it feeling too childish.

What sets this cake apart is the contrast of smooth, rich chocolate buttercream with bright vanilla sponge. It is made for milestone birthdays, colourful celebrations and chocoholics who want something more exciting than a standard chocolate cake.

Ingredients

Sponges: Flour (wheat, gluten), sugar, egg, milk, buttermilk (milk), yoghurt (milk), sunflower oil, baking powder, vanilla extract, salt, colouring Pink (Glycerol, Propylene, Glycol, E551, Food Colour: E104, E155, E129), colouring Yellow (glycerol E422, propylene glycol E551, colours E104 & E110), colouring Green (Glycerol, Propylene, Glycol, E551, Food Colour: E104, E133), colouring Blue (glycerol E422, propylene glycol E1520, silicon dioxide E551, water, colours E133 & E122), colouring Purple (Glycerol, Propylene, Glycol, E551, Food Colour: E122, E133)

Buttercream: Sugar, egg white, butter (milk), vanilla extract, cocoa, salt

Decorations -

Maltesers: Sugar, Skimmed Milk Powder, Cocoa Butter, Glucose Syrup, Barley Malt Extract, Cocoa Mass, Palm Fat, Lactose and Protein from Whey (from Milk ), Whey Powder (from Milk ), Milk Fat, Emulsifiers (Soya Lecithin, E492), Wheat Flour, Palm Kernel Fat, Palm Kernel Oil, Raising Agents (E341, E500, E501), Wheat Gluten, Salt, Glazing Agent (Pectin), Natural Vanilla Extract, Milk Chocolate contains Milk Solids 14% minimum, Milk Chocolate contains Vegetable Fats in addition to Cocoa Butter, Sugar, Cocoa, Vanilla).

Jimmies: Sugar, Corn Starch, Hydrogenated Palm Oil, Dextrin, Soy Lecithin, Colours: E102, E110, E120, E129, E133, Glazing Agent: Shellac, Carnauba wax.

*The colours used across the entire icing colouring range may include the colours E102, E104, E110, E122 & E129 - which may have an adverse effect on activity and attention in some children.

All products are produced on premises handling eggs, wheat, gluten, nuts, peanuts, milk, sesame and soya hence may contain traces. Please note cakes may contain cocktail sticks and dowelling for support - remove before serving.

Dietary & Allergen

Allergens: 🌾 Wheat (gluten), 🥚 Eggs, 🥛 Milk (dairy), 🌱 Soya, 🥜 Nuts and Peanuts. All our cakes are handmade in a kitchen that handles these allergens every day.

For this reason, we cannot in good faith label any cake as truly “free-from” or vegan — achieving that level of separation would require entirely separate premises. If you have a severe allergy, we recommend speaking to us before ordering so we can advise you personally.