Il est prévu qu'à partir du 31 octobre 2023, une restriction de l’utilisation des balises Alpha/identifiants d’expéditeur alphanumériques contenant des termes génériques supplémentaires (et leurs variations de caractères) soit mise en place lors de l’envoi de SMS au Royaume-Uni.
Le tableau ci-dessous contient une liste définitive des balises Alpha susceptibles d'être bloquées.
| 1TimePin | Bank | Discount | NoReply | Repayment | SMSVerfiy |
| 2FA | Banking | Energy | Notify | Reply | Support |
| Accept | Bill | Fraud | OneTimePin | Respond | System |
| Access | Billing | Help | Order | Save | Text |
| Account | Call | Info | OTP | Saving | Trace |
| Active | Card | InfoSMS | OTPSMS | Scam | Track |
| Admin | Caution | ISA | Package | Savings | Tracking |
| Advise | Certify | Key | Parcel | Schedule | Trust |
| Alert | Check | Loan | Pay | Secure | TXT |
| Allow | CloudOTP | Login | Payment | Security | Update |
| Allowance | Code | Logistics | Pin | Service | Updates |
| App | Collect | LogMeIn | PinCode | Shipping | Validate |
| Appointment | Collection | Logon | Post | Sign | Verify |
| Approve | Confirm | Malware | Protocol | Signin | VerifySMS |
| Approved | Contact | Message | Purchase | Signon | VerifyMe |
| Auth | Control | Mobile | Ratify | SMS | Virus |
| AuthMsg | Courier | Mortgage | Rebate | SMSAuth | Warn |
| Authorise | Delay | MSG | Receipt | SMSCode | Warning |
| AuthSMS | Deliver | MsgAuth | Refund | SMSInfo | Winner |
| Aware | Delivery | Network | Reminder | SMSOTP |