Preheat the oven to 175| 350F. Line a 22 cm loaf tin with parchment paper.
Sift the flour and baking powder in a large bowl.
Mix the vegetable oil, salt and sugars together in a medium bowl. Add in the lemon zest, vanilla and milk and stir to combine.
Add the lemon juice and whisk to combine.
Pour the wet ingredients over the flour and whisk until just combined.
Pour the batter into prepared pan and bake for 45-47 minutes or until a toothpick inserted near the center comes out clean.
Let cool down into the pan for 10 minutes before transferring to a cooling rack to cool completely.