Place all of the wet ingredients into a food processor and process a few times until fully combined.
Next, add all of the dry ingredients to the wet ingredients in the food processor and process for about 30 seconds or more until all of the ingredients are combined fully.
Line a 2lb (900g) loaf tin with baking paper and then pour the cake mixture in to the loaf tin.
Pour the blueberries on top of the cake mixture then gently swirl them into the mixture with a spoon.
Bake the cake in a pre-heated oven at 180 degrees C for a total of 50 minutes. After 30 minutes, check the top of the cake to make sure it is not turning brown too quickly. If it is, place a piece of foil over the top of the cake whilst it cooks for the remaining 20 minutes. Check it is cooked by inserting a skewer into the cake and ensuring it comes out clean. If not, cook for another 5 or more minutes until properly cooked.
Remove the cake from the oven and allow to cool for about 20 minutes. After 20 minutes, remove it from the loaf tin by carefully lifting the ends of the baking paper and resting it on a rack to cool for another 30 minutes.
Cut the loaf into 10-12 equal slices and serve. Store wrapped in baking paper or kitchen roll, in an airtight container on the counter top for up to 2 days or in the fridge for longer.