Preheat oven to 175°C (350°F). Grease a loaf pan and line with baking paper.
In a bowl, mix flour, baking powder, baking soda and salt.
In a separate bowl, beat butter and sugar until creamy. Add eggs one at a time, then vanilla.
Gradually mix in flour mixture alternately with milk. Fold in blueberries gently.
Pour batter into the pan. Bake for 50-55 minutes until a toothpick comes out clean.
Cool completely. Mix sugar glaze and lemon juice; drizzle over the top.
Garnish with extra blueberries or lemon slices for a fresh look.