Hi ​@Tom Evans 

Thank you for sharing, however I am terribly sorry as the system does not allow us to port internally. You can however transfer from a different network to our network or transfer from our network to a different network. The only way to keep your number with iD mobile is to do an upgrade from your old contract which will convert to a new one keeping your old number.

This is mentioned on our iD Community website and the links are below:

https://community.idmobile.co.uk/switching-to-id-mobile-132/can-i-switch-my-number-from-one-id-mobile-plan-to-another-48870#:~:text=No.,iD%20Mobile%20plan%20to%20another.

https://community.idmobile.co.uk/ask-a-question-18/already-with-id-mobile-sim-only-and-intend-to-take-out-new-contract-57882

https://community.idmobile.co.uk/ask-a-question-18/transfer-phone-number-from-my-account-to-another-person-55996
 

Thank you,

Zandile M

The iD Mobile Team