All numbers to try here Guide: Coronavirus Community Help and Support
Got the supremely unhelpful email below from "BluePrism@O2.com". It seems the number port has failed. Now have been in a customer services phone queue for 1h41m and counting. Since I have two numbers on the account, I don't even know which this refers to.
This is how O2 on-board new customers. It's woeful.
Subject: Port In/Migrate - Request
*** THIS IS AN AUTOMATED MESSAGE ***
The request could not be completed, the following reason is given for the rejection:
Validation Exception: Sorry, the information provided for our security checks is incorrect. Please check and resubmit your request.