You will always receive the invoice as an attachment to the shipping confirmation to the e-mail address registered when placing your order. 


Alternatively, you can request your invoice in your customer account in the "Orders" section, then click on the button "View order". Or you can go directly to this page: https://www.addnature.co.uk/query-order.html


Click on the button "Request invoice" to have the invoice sent to you again.