A second passport has been an important pre-requisite of being a global citizen for many years. Entrepreneurs around the world, in particular those who live in developing countries with regimes that could quickly turn hostile, have understood the value of possessing alternative nationality for some time.
Ultimately, a passport offers its holders the right to escape if it becomes necessary and enables family members to enjoy the benefits of being alternatively domiciled in a country whose higher standards of education, political freedom, or more friendly business climate allows families to flourish.
The UK today has one of the best passports in the world. The Tier 1 Investor Visa scheme promises a UK passport that offers visa-free travel to 173 countries.