I am also interested in obtaining the UK database.

The UK database was introduced in the database update for structure version 11.0.3. You can follow this guide to update your database to version 11.0.3 (database structure version, not application version).

https://esha.zendesk.com/hc/en-us/articles/202671583-Manually-updating-the-ESHA-Database-using-Database-Utility-