Preheat the oven to 180°C/fan 160°C/gas mark 5.
Place the butter, demerara sugar and caster sugar in a bowl and cream together.
Add the mixed spice, cinnamon and nutmeg and mix well.
Add the dried mixed peel, dried cranberries, raisins, glace cherries and Fate Low Protein All-Purpose mix and mix well.
In a separate bowl, mix together the golden syrup, ProZero and the egg replacer and add to the mixture and mix thoroughly.
Pour into the lined cake tin and bake for 45 minutes or until golden.
Remove from the oven and allow to cool.
When cold, decorate the cake with your favourite Christmas scene using permitted toppings.
Fate Low Protein All-Purpose Mix and ProZero are foods for special medical purposes and must be used under medical supervision.