UK Extended Keyboard for Chrome
The UK Extended Keyboard extension for Chrome OS provides users with a UK extended keyboard layout. To enable this feature, simply install the extension and then go to chrome://settings/languages. Add English (UK) as a language and check the "UK extended" option. If the option does not appear, sign out and try again. Switch between keyboard layouts using Alt+Shift until you reach the UK extended keyboard (symbol: EN*).
By installing this extension, you agree to the Google Terms of Service and Privacy Policy.
Please note that there is a known issue with this extension. If it stops working after updating to M36, you can find a workaround at crbug.comHowever, Chrome OS 37+ should not be affected.
V1.1 of this extension has fixed the issue where the key was not working as advertised. The internal name of the key has been changed in Chrome OS.