Took in a parcel for next door. Fairly common since they are both out at work so I didn't even look at it. UK Mail.
But it wasn't for them.
House number and street were for next door, but not the name or postcode. Postcode was for the other end of the street. And a Flat 3.
Now there are very few houses in this street big enough for three flats, so decided to have a look at the other end of the street. Three houses are indeed in three flats - but all A,B & C. And none with a number that could have been a typo.
The card UK Mail left next door had no contact details for them.
Parcel is quite large and heavy. And I've signed for it. ;-)