IG Trading platform: You can delete the whole order by navigating to the ‘orders’ tab on the left hand side, hovering over the order you want to delete, and clicking the ‘delete’ button on the right. A green confirmation will appear if the order is deleted.
Old platform: To delete an order navigate to the ‘working orders’ window and click on the asset. You will then be able to click the ‘delete’ button in the bottom left.