After I completed a recent upgrade of Windows 10 to 1803, I noticed that my English (United Kingdom) language had been joined by English (United States) and that I couldn’t remove this from the system.

After a bit of research I came across the following article that demonstrated how the additional language can be removed using PowerShell –

Nice and cleanly I no longer have the “ENG” menu in my task bar to switch to a language I don’t need.