Put together the water, oil and sugar in a bowl. Mix them until the sugar dissolves.
Mix the vinegar and soda bicarbonate then include it in the bowl with the wet ingredients.
In another bowl mix the rest of the dry ingredients (leave out the raisins) until you reach a homogeneous blend.
Using an electric hand blender or a whisk add the dry ingredients mix into the wet ingredients mix.
Grate the apples and squeeze out their juice. Add them to the cake mixture together with the raisins
Cover your tin with baking paper and bake at 180°C (gas mark 4) for 40-45 min. Prick the cake with a wooden skewer to check whether your cake is ready. If it comes out clean, take it out of the oven.