Preheat oven to 180°C.
Sift the flour, self-raising flour, bicarbonate of soda and cocoa together in a bowl.
Add the raisins, nuts and chocolate chips.
Mix well to cover.
Cream the butter, egg, vanilla extract and sugar together with an electric mixer until smooth.
Lightly fold in the dry ingredients.
Drop 15 ml quantities of mixture 4 cm apart onto a lined baking tray.
Press down lightly to flatten slightly.
Bake for 10 minutes.
Allow to rest for 5 minutes before turning out on a cooling rack.