SMS phishing messages claim to have a Royal Mail parcel for you, with an unpaid shipping fee. The phish is a simple but effective phish. It takes advantage of several real-world factors to ensure its a bit more believable than other missives landing in mailboxes. If you or anyone you know has been caught by this, contacting banks or credit card companies is a priority. It’s a particularly unpleasant scam to be caught out by, when a majority of people are reliant on postal services. In the UK, Brexit is causing no end of confusion over delivery charges.”]
Source: https://blog.malwarebytes.com/scams/2021/03/royal-mail-delivery-scam-warning/