Preheat your oven to 325°F (160°C). Grease and line a loaf pan with parchment paper.
In a large bowl, mix the flour, baking soda, and baking powder.
Stir in the golden raisins so they are coated with the flour. This helps keep them evenly spread in the loaf.
In a separate bowl, whisk together the beaten eggs, barley malt syrup, molasses, demerara sugar, and cold black tea until smooth.
Pour the wet ingredients into the dry ingredients. Use a wooden spoon or spatula to mix gently until everything just comes together. Avoid over-mixing to keep the loaf tender.
Transfer the batter into your prepared loaf pan. Spread it out evenly.
Bake for about 60 to 70 minutes. Check after 60 minutes by inserting a toothpick in the middle. If it comes out clean or with a few moist crumbs, the loaf is ready.
Let the loaf cool in the pan for 10 minutes, then remove it and place it on a wire rack to cool completely before slicing.