Not sure what Alinlondon is referring to as "half the price" without a supermarket discount offer (BOGOF, 3 for 2, 2nd half price, etc.) is pushing it when comparing like for like ice creams with premium ingredients amongst all the supermarkets.

Here's a selection from 3 of the bigger players in the British market:

Waitrose seriously creamy Madagascan Vanilla:
Whole milk, whipping cream (34%), demerara sugar, skimmed milk powder, pasteurised free range egg, sugar, Madagascan vanilla extract (0.5%), Madagascan vanilla powder.
£4 for 500ml


Sainsbury's Vanilla Ice Cream, Taste the Difference
Whole Jersey Milk*(50%), Double Cream* (25%), Unrefined Cane Sugar, Skimmed Milk Powder*, Free Range Egg Yolk, Madagascan Vanilla Extract, Vanilla Powder * From Cow's Milk
£4 for 500ml


Tesco Finest Madagascan Vanilla Ice Cream
Whole Milk, Double Cream (Milk) (34%), Demerara Sugar, Dried Skimmed Milk, Pasteurised Free Range Egg, Sugar, Madagascan Vanilla (0.4%) (Vanilla Extract, Crushed Vanilla Pods)
£3 for 500ml


Haagen-Dazs Dairy Vanilla
Fresh Cream, Condensed Skimmed Milk, Sugar, Egg Yolk, Natural Vanilla Flavouring
£4.50 for 500ml
Hmmmm... Condensed milk (and a hefty proportion at that), no wonder it is so sickly sweet!

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Edit to add
Sorry to miss your latest response, Alinlondon
Tesco brand premium ice cream is consistent with your first post
Nearly half the price of Haagen Dasz and I would agree that the Bourbon Vanilla example has better ingredients (although this can be argued, particularly by those with sweet teeth!)