Change Autocorrect in Mojave
I have an iMac, with OS Mojave 10.14.1 I want to make Autocorrect work to UK grammar. It is set to US grammar and I can't work out how to change it. All advice I have seen refers to changes in Lion and talks about the 'language and text' section in system preferences. This is now 'Language and Region' button and I can't find a text area.
All I want is to be able to type and have the auto correct make changes into UK English not US English.
Can anyone tell me what I need to do?
iMac, OS X Mountain Lion (10.8.2)