That would be much less straightforward. The modern UK is more or less the same government that enslaved the people of Jamaica, and it’s easy to follow how the effects of that slavery have played out over the last 180 years or so. Much more difficult to track wealth over two millennia, especially since millions of modern-day Britons are likely to be descendants of those Roman legions.
And let’s not forget that the Roman Empire doesn’t even exist anymore. The modern nation of Italy has only existed as a unified state for less than a century.