thoss wrote:
:
This happened in Reading about a century ago. The Berks/Oxon boundary
used to be the Thames, then Caversham - the Reading suburb north of the
Thames - was moved into Berks, and into Reading.

We used to live in Appleton, Cheshire, in the early 70's. When the GPO
decided Warrington was to be our postal district, we rebelled and used
to put "Appleton, Warrington, Cheshire" on our letters, which the GPO
didn't like because Warrington was in Lancashire (north of the Mersey).
Letters often arrived with Cheshire scribbled out and Lancashire added.

The situation was finally resolved when the moved the whole of
Warrington into Cheshire in 1974 having invented Greater Manchester and
Merseyside.

(Actually, I think they moved the county boundaries, as it was easier
than moving the town :-)