Office Button. Erm, off to laptop with 2007. Ten doesn't have one.
But in 2010, I did look at Review / Language / Set proofing language.
Set it for the umpteenth time to English UK - Guess what, it changed the English UK* on the strip at the bottom back to US.
(*left over from last night where I achieved UK setting by ‘Selecting’ the entire document text and changing to UK. I got that from a forum where others could not get a global UK setting.)
I'll try it with 2007 when Vista finally boots.
Right, looked where you said and it was a bit obscure what to do next. I went back to the Review / sect language etc, Very similar to 2010, and it offered to go to MS and get the download. It installed itself, and it works.
Two minutes, against 90 with this damn 2010.