1. Discount codes cannot be used in combination with bundles or other discount codes
2. Discount codes cannot be applied to sale items
3. The olive drab site wide discount codes apply only to non sale items. Therefore if you have £50 worth of non-sale items in your basket and £50 worth of sale items you will only be able to use the ODFRIDAY10 code as this amounts to less than £100. 

spend <£25 = 5% Off storewide

spend £25-£100 = 10% Off storewide

spend >£100 = 15% off storewide

spend refers to the total of non-sale items only.