This orange and rapeseed oil cake recipe by James Martin using store cupboard ingredients, got me thinking. If you eat a slice of cake that was made with healthy ingredients like oranges or carrots, would it count as part of your 5-a-day?

I suppose it would depend on the amount of the healthy ingredient within the cake. I can't imagine there's enough orange or carrot in a slice of the cake to count for much. I suppose you could eat the whole cake to get one of your five a day, but then the unhealthy ingredients would by far outweigh the value of an orange or a carrot!

No.
It's meant to be a treat that is seen as "more healthy" than an "ordinary" cake.
Personally, I wouldn't worry about either if I was eating healthily long term.

A Xmas cake could be one of your 5 a day - 27g is the amount of dried fruit like sultanas that makes a serving.

However, Xmas cake would be a "red" on fat, sat fat and sugar - so it would be very hard to argue this with a retailer or the FSA

The term "store cupboard ingredients" is flexible.
I once argued with someone fomr a major supermarket that Xanthan Gum was a store cupboard ingredient, and she said it was not - despite the fact that they sell xanthan gum in their home baking section