Fast forward to the DPA 2018
Fast forward to the DPA 2018, which is based on the EU GDPR, and that right has been watered down
That's not the only right that's been watered down. Prior to DPA 2018 you were entitled to request a copy of an employment reference about you from the recipient but not from the sender. Under DPA 2018 you aren't entitled to request it from either of them. So by law you can be blacklisted and you'll never find out.
This could well be one of the stumbling blocks on the path to an EU adequacy decision.