Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper.
In a large mixing bowl, combine the rolled oats, flour, granulated sugar, and desiccated coconut. Mix well.
In a small saucepan, melt the butter and golden syrup over low heat. Stir until the mixture is smooth and combined.
In a small bowl, dissolve the baking soda in the boiling water. Add this mixture to the melted butter and syrup, stirring well. The mixture will froth up.
Pour the wet mixture into the bowl with the dry ingredients. Stir until well combined.
Using your hands, shape tablespoons of the dough into balls. Place the balls on the prepared baking sheet, allowing some space between each one to spread. Flatten each ball slightly with the back of a spoon.
Bake in the preheated oven for 10-12 minutes, or until the biscuits are golden brown. If you prefer a chewier texture, bake for a shorter time; for a crispier texture, bake a bit longer.
Remove the biscuits from the oven and allow them to cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely.
Enjoy your meal!