"David Hansen" wrote

An example of a correct (fictional) address is

TFR
12 Main Street
Edinburgh
EH0 0EH

Incorrect (sorry). The Royal Mail give seven mistakes which can make a
postal address incorrect, of which one is 'Do not put the Post town in lower
case.'

The others a
Do not indent the address
Do not omit the name or building number
Do not punctuate
Do not use the words 'near' or 'by' (I suppose you have to if you are
sending something to Stoke by Clare or Stoke-by-Nayland)
Do not leave the Postcode incomplete
Do not underline or write anything beneath the Postcode.

Peter