David Newton (davidp.newton(a)gmail.com) [050524 03:40]:
So, it appears that Crown copyright material that has
been published
in 1954 or earlier is considered public domain worldwide by OPSI and
is thus fair game for the Wikipedia to use.
Are Ordnance Survey maps from 1854 or before Crown Copyright? Because if
they are now public domain, Open Streetmap (
http://openstreetmap.org/)
would probably love to know.
- d.