I’m currently working on a client-site which is using Magento 2, and realised there’s no full en_GB language pack for English (United Kingdom) available.

I’ve created the following package with full instructions that you can view on Github.
https://github.com/cubewebsites/magento2-language-en-gb

It’s free to download and use, all I ask is if you can create PRs for any mistakes that you might spot.

The project is forked from another Github project for the following reasons:

  1. The project wouldn’t install
  2. Once that was fixed, it wouldn’t load any translations
  3. Once that was fixed, it turned out that a lot of it was actually French

This version fixes all the above issues and also includes a lot more translations.

It has been developed and tested on Magento 2.1.7 (latest at time of posting)

Enjoy!