We are often asked, "Will delivery companies use 'Hippo' Boxes?
The simple answer is yes, hundreds of deliveries to boxes are made every day and we have lost count on the number of delivery drivers who have asked, "Why doesn't everyone get one of these boxes?" ( A sentiment we thoroughly endorse!). 
Although, some may require specific instructions to do so from the company sending the goods to you.
When courier/ delivery companies set-up contracts with retailers  terms of delivery are generally set against specific time frames, e.g. next day delivery and type of delivery, such as with signature (known as POD) or without signature. If delivering into a 'Hippo' Box is at variance with the standard terms of the contract from the shipper, the delivery company may want specific instructions to do 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 'Hippo' 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.

Note: Royal Mail have now introduced 'Royal Mail Tracked', which gives customers using companies that use them to deliver their parcels, to do exactly that and state where they want their parcel left.. So now you will be given a field on the order page to state you want the parcel put into your 'Hippo' Box and then you can follow your delivery all the way.

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