It isn't exactly "the" British spelling -- it's actually "a" British spelling. That is, the "z" form is not only correct British usage, it's actually quite a b

It isn't exactly "the" British spelling -- it's actually "a" British spelling. That is, the "z" form is not only correct British usage, it's actually quite a bit older [0]. [0] http://blog.oxforddictionaries.com/2011/03/ize-or-ise/ http://blog.oxforddictionaries.com/2011/03/ize-or-ise/