In the past 24 hours, Action Fraud has received 120 reports of courier fraud. Victims have reported a particular tactic of being called by someone impersonating a police officer. The suspect uses the name Eric Shaw and gives over his badge number, in order to appear trustworthy to victims.
https://www.actionfraud.police.uk/alert/action-fraud-warns-of-new-courier-fraud-tactic-after-receiving-120-reports-in-24-hours