Apple Crumble Loaf Cake

Name: Apple Crumble Loaf Cake
Prep time: 20 min
Cook time: 55 min
Total time: 1 h 15 min
Cuisine: European, British
Ingredients: 210g Self-raising wholemeal flour; 1½ tsp Mixed spice; 120g Butter (unsalted) (cut into small pieces); 120g Unrefined light muscovado sugar; 3 Egg(s) (free range); 1 tsp Vanilla extract; 100g Raisins; 2 Apple(s) (, Sweet, Eating); 3½ tbsp Milk (semi-skimmed); 1 Lemon(s) (, Juice of); 2 tbsp Plain white flour; 15g Butter (unsalted) (, Cold, Cut into cubes); 2 tbsp Unrefined demerara sugar; 15g Porridge oats; 0 Toffee sauce (to serve)