Grease a 23x12cm (9x5 in) loaf tin. Preheat oven to 180 C.
Combine oil, honey, eggs, vanilla, and mashed bananas in a bowl.
In a large bowl, whisk together flour, wheatgerm, salt and bicarbonate of soda. Make a well in dry ingredients, and add the banana mixture. Mix together until dry ingredients are moistened. Stir in nuts. Pour batter into prepared pan.
Bake 1 hour in preheated oven. Test for doneness, and cool on wire rack.