More progress!!!
I tried loading the 6NK code as suggested but I got a failure when I tried to code the ECU. Interestingly the FA didn't give an error when I verified it.
Rather than leave it like that I re ran the FA with 6NS.
For whatever reason this time it seemed to work!
I can now see the bluetooth audio along with the Office tick box.
Shame I still can't play music from my phone though.
I can see a greyed out Note icon in my phone settings so I'm sure it's now just a case of configuration.
Nearly there!!!!