Sending an order with Royal Mail using the Signed For service is a great way to prove delivery, unfortunately the postman will often leave packages with customers without obtaining a signature.
So, put a small label next the shipping address; (this might just prompt the postie to get the signature).
You have paid the Royal Mail for a delivery using a more secure service.
If you have not been asked to provide a signature then please help make
Royal Mail service more secure for all and contact us so that we can
lodge a complaint.
Or contact Royal Mail customer services on; 08457 740 740