[buro9]

I grew up in a 149 High Street. About 300m away was another 149 High Street. They both originally belonged to different villages but London's growth had filled in the gaps between the villages.

We knew who lived there as it wasn't too infrequent that their post arrived at ours or vice versa.

[aaaaaaaaaaab]

Weird, the post code should have been different.

[buro9]

Postal system is not perfect. Post code databases are not perfect. The post codes were (and are) different, but post would get mixed up.

Same postie too! He'd typically correct it based on surname but occasionally something would get it through (and this was 30 years ago).