In doing some recent research I found quite to my dismay that :
The postal counties of the United Kingdom, now known officially as the former postal counties, were postal subdivisions in routine use by the Royal Mail until 1996.[1] .....
For operational reasons the former postal counties, although broadly based on the counties of the United Kingdom, did not match up to their boundaries; in some cases with significant differences.
According to the Royal Mail, the former postal county data no longer forms part of postal addresses. It was removed from the Postcode Address File database in 2000 and does not form part of its code of practice for changing addresses.[2] ...
.....
In 2010 the regulator advised Royal Mail to cease supply of county data altogether[4] and a timetable has been put in place for this to occur between 2013 and 2016.[5]
Well I didn't know that !
Surely our heritage counts for something ? Surely Counties are far far more than 'just a part of an address'?