We are often asked, "Will delivery companies use 'Dormouse' Boxes?
The simple asnwer is yes. 
Although, they may require specific instructions to do so from the company sending the goods to you.
When courier/ delivery companies set-up contracts with retailers (in this context within the logistics industry, often refered to as 'the shipper') terms of delivery are generally set against specific time frames, e.g. next day delivery, before noon etc and type of delivery, such as with signature (known as POD) or without signature. If delivering into a 'Dormouse' Box is at variance with the contract from the shipper, the delivery company may want specific instructions to do so. So to ensure this happens you need to to state when you place your order that if you are out, you want delivery made to your 'Dormouse' Box. All companies trading on the internet should offer you the ability to give instructions when placing an order. Indeed, not to do so is to fail to meet IMRG trading and delivery standards.

Please note - there is one exception to this. Under the Medicines Act prescription drugs have to be personally delivered to the user.