If the person or organisation you are calling has Caller Display or a similar service, they will be able to see your number before they pick up the phone. You can prevent your number being displayed using Number Withhold.

How does it work?

Instead of your number showing, the words 'Caller ID blocked' or a similar message is displayed. Simply dial 0197 before you dial the number. (Dial 197 if the number you are calling from has a toll bar.) This will prevent your number being displayed for that call only. Anyone can use this service at anytime.

Important things to know

• Even if you use Number Withhold, your number will be displayed to 111 emergency services and our operators
• Please note that in some cases this service may not be available or is limited due to network constraints and incompatibility with other products and services