The parcel had the address on, but they deliver according to postcode/gps so they don't spend time looking for your house number, but just seem to post it in the first letterbox they get to.
I bought something from Yodel and had a message from them saying it had been delivered, but I was home and no-one had even knocked.
So I called the retailer and they said Yodel are only given the postcode, not the door number. He looked it up on his system and said "it's at either number 23 or...