Guys,
My pro nav is running the latest maps but still doesn't give me the option of entering a house number when navigating with postcode input only it comes up with no street data?. However if you enter the full address by town & street then the option to enter the house number is available, so surely the street data is available? Seems very odd, the manual doesn't help either

but I would of expected the house number option in postcode entry the same as tom tom.
Am I doing something wrong?
Help pls