Traffic report radio station. How to switch off

[kajagoogoo]

Hello

2007 Continental GT.

I've had this thing 17 years and its suddenly started to interrupt music playing with traffic reports (Radio Oxford).

For the life of me I have no idea how this started or how to switch it off. I've looked at TMC, TMI screens but can't find an option to switch it off.

Any ideas gratefully received.
KP