Preheat the oven to 350 degrees F (180 degrees C).
Grease a 7-inch round cake pan or a loaf pan and line base with parchment paper.
Beat Butter (125 gram) and Caster Sugar (110 gram) with electric mixer until light and fluffy. Add Egg (2), one at a time beating thoroughly after each addition followed by Vanilla Extract (1/2 teaspoon) and Lemon Juice (1 tablespoon) and mix well.
Stir in Orange Marmalade (2 tablespoon) and Orange (2) zest with a rubber spatula, then Unsweetened Shredded Coconut (45 gram), Self-Rising Flour (225 gram) and Milk (125 milliliter).
Spread mixture into cake pan; bake for about 60 minutes or until a skewer put into the center of the cake comes out clean.
Leave the cake to cool in pan for 5 minutes, then take the cake from the rack to cool completely.