In reply to cb294:
This could be the answer:
http://www.huffingtonpost.co.uk/2013/12/02/amazon-drones-prime-air_n_437034...
I live in a village with no house numbers or street names. So my address is just name, name of village, post code (which is for the whole commune, one of the biggest, geographically in France, and the name of the commune).
This is fine for the postman, who knows everyone but couriers get problems and I get stuff delivered from Amazon every week. Quite often, they give up, leave it at the post office and then the postman delivers it later.
I find also that a lot of the big couriers outsource to smaller white van men which means success is variable.