when you have a post code the first bit
is called the out-code
and the last bit
is called the in-code
you can post something with just the house number and postcode. the postie will figure out the rest.
it depends purely on the competency and motivation of the postperson, surely. technically, it could and should get to its destination, but odds are it might well not do.
genuinely need to re-evaluate my life.
But this guy probably does.