The key tag fob did not do anything earlier in the day. I was told by Volvo assist on the phone to use that key initially. I was to use the physical key to open the car (via passenger door). The alarm would go off but put it on the logo in the centre cubbyhole/central armrest and it would reset things . Key would not work the lock which they said might be due to having never been used.

This is why they sent a Volvo/BMW mechanic/technician . He said he had never seen this key before which seems ludicrous!! I know my friend with a similar age V90 has one for his vehicle. In actual fact, the key that did work was the one in the normal fobs.
The speed of service was really good, compared to our previous breakdown.
I do.service the car with a main dealer because they cover you with Volvo assist when abroad. The extra main dealer cost is well offset in not getting green flag or AA overseas breakdown costs.

Best to all MM