Use APKPure App
Get Dextr dictionary: UK English old version APK for Android
British English Dictionary Plugin for dextr alphabetic keyboard
NOTE: This is not a standalone app; you need to download the LATEST version of dextr Alphabetic Keyboard (Free app to download) in order to apply this.
Links:
• For issues/feature requests regarding dextr Alphabetic Keyboard
http://textwithdextr.com/index.php/en/forum/index or email us at share@textwithdextr.com