One thing long felt/known is that The Royal Family has been a huge tourist attraction to the UK for decades.
Verdict
There is an absence of data as to whether tourists go to the UK specifically because of the royal family. However, while tourists might not be primarily attracted to the UK solely by the monarchy, the spectacle of royal events and access to parts of the royal estate across the UK enables VisitBritain and other national tourism agencies to build on Britain’s tourism appeal which blends heritage, pageantry and the contemporary. In this way, the relationship between royalty and tourism has an important economic and destination marketing dimension.