Locale problems on installation

Nextcloud Box: After installation the locale settings default to the US (yawn).
On running an update a bunch of Locale errors are generated:

...
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory

This can be fixed by correcting the locale settings. In my case for en_GB.

:~$ sudo locale-gen en_GB.UTF-8
:~$ sudo update-locale LANG=en_GB.UTF-8

Keyboard is now no longer the damned annoying US default version and the error messages go away.