Preheat the oven to 190°c.
Line 9 medium muffin cups with paper liners. Set aside.
Whisk the flour, baking powder, soda, cinnamon, salt and sugar together in a bowl.
Make a well in the centre.
Whisk together the milk, oil and egg.
Pour into the well in the centre of the dry ingredients, and fold together just to combine.
Fold in the berries.
Divide the batter between the muffin cups, filling them ⅔ full.
Bake in the preheated oven for 20 to 25 minutes or until the tops spring back when lightly touched and a toothpick inserted in the centre comes out clean.
Remove from the muffin tin and place on a wire rack to cool.