Hi Ed
Open Chrome
Click the 'three lines' icon towards top RH corner
Click 'Settings', then scroll down and click 'show advanced settings'
Scroll down then click 'Languages and spellchecker settings'
Here you can switch off the spellchecker completely if you prefer (untick)
If you want the spellchecker enabled (ticked) but using English (UK) :
Click 'Add'
Choose 'English (UK)' from the drop-down menu - then click 'OK'
Click 'English (UK)' to select (it goes gray
)
Choose 'Use this language for spellchecking'
Click on any others showing and click 'X' to remove
Click 'OK' to save changes
Close Chrome to lock in your preferences
Open Chrome and away you go ...
Hope this helps
Guy