Duke and Duchess of Cambridge?

[Chas]

So, quick question:

My understanding is that in Scotland the Prince of Wales and Duchess of Cornwall are generally referred to respecitvely as the Duke and Duchess of Rothesay. Is this following a particular protocol, or is it a personal preference?

Similarly, would the Duke and Duchess of Cambridge be referred to as the Earl and Countess of Strathearn whilst north of the border?

Yes Tim, it is protocol. They would use the highest Scottish title and style.

Regards

Chas