The money exacted in taxes and exploitation has already been spent, and cannot realistically be reclaimed. But individual pieces of statuary sitting in British museums could be, if for nothing else than their symbolic value. After all, if looted Nazi-era art can be (and now is being) returned to their rightful owners in various Western countries, why is the principle any different for looted colonial treasures? Which brings me, inevitably, to the vexed issue of the Kohinoor in the Queen’s crown.