Set User Profile Locale setting

[Nibushi]

Is there a way using Set-PnPUserProfileProperty to bulk update the locale settings for users?

I am trying to ensure that all sites are displayed in English (United Kingdom) without having to set the locale for every new site that is created. The locale of the site can be overridden by the locale settings configured in the User's SharePoint User Profile. This can either be set manually by the user or by admins.

I used Get-PnPUserProfileProperty to return a set of properties for a user with these settings but I couldn't see anything in the results which mapped to either the locale or the "Choose your settings: always use my personal settings".

Is this possible using PnP Powershell?