OSX needs to read the Oxford English Dictionary

There’s only one thing so far that’s bugging me about OSX and the apps that rely on it. American English.

I don’t want to write in Americanese, I want to write in proper english, thank you very much. I don’t drop that ‘u’ from colour, I don’t spell apologise or realise with a ‘z’, and I don’t do any of the other little things that differentiate our supposedly common language.

Obviously, I’ve started teaching that little dotted red line the error of its ways, but is there any way to install a British English dictionary on OS X? I’ve not found a way as yet, but surely Apple have foreseen this eventuality… haven’t they? Or are they simply hoping to avoid confusion by forcing us brits to spell “the right way”?

Any insights will be much appreciated, as Google’ing this hasn’t revealed anything of note.