Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a large bowl, combine the rolled oats, desiccated coconut, and granulated sugar.
In a small saucepan, melt the butter and golden syrup over low heat until combined.
In a separate small bowl, dissolve the baking soda in the boiling water. Add this to the melted butter mixture and stir until well combined.
Pour the butter mixture into the dry ingredients and mix until well combined.
Scoop tablespoons of the mixture and place them onto the prepared baking sheet, spacing them about 2 inches apart. Flatten each scoop slightly with the back of a spoon.
Bake in the preheated oven for 10-12 minutes, or until the biscuits are golden brown and crisp around the edges.
Allow the biscuits to cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely.
Enjoy your meal!