[Wikipedia-l] no crown copyright outside of uk - wrong it does exist outside the uk

[Jean-Baptiste Soufron]

>
> Crown copyright DOES exist outside of the UK, although in slightly
> different forms. It exists in Canada, Australia, New Zealand and a
> number of other countries. The UK version does exist in name outside
> of the UK, although almost certainly the duration of the copyright
> would be no different than ordinary authors under the Berne
> Convention.
>
> However, given what the OPSI have said in that email we are perfectly
> safe in using published UK Crown copyright materials from 1954 or
> earlier in the Wikipedia. Regardless of the exact term that the laws
> of each country might provide, they are the people that administer UK
> Crown copyright. That means they determine how long they will enforce
> the copyright outside the UK. If they, as they have, say that
> published UK Crown copyright works will be public domain 50 years
> after publication worldwide, not just in the UK, then they are
> perfectly able to do that.

Well, once again, given the Bern convention any author can enforce  
its rights by himself even if his work is public domain or equivalent  
in its own country. And the crown copyright office has no authority  
on this.

What will they do if such a case happens ? What kind of warranty do  
they provide ?