[IronJack]

a central regulatory authority capable of overseeing standardisation.

Shouldn't that be "standardiZation"?

Don't have one; don't want one; don't need one. Our language is just fine the way it is.

[brityank]

Shouldn't that be "standardiZation"?

No. The English pronunciation is with the "s", not a "z". Lack of enunciation led to the change across the pond.

"Two countries divided by a common language."
-- Winston Churchill.