London is the world’s richest City 2019, as it is considered to be the financial capital of Britain. London is home to numerous billionaires who are home-grown, such as the Russian oil magnate Mukesh Ambani and Brazilian entrepreneurial Jose Neves, who has an estimated net worth of $32 billion. The UK is also the home of 37 billionaires, and there is a billionaire per capita based in Mumbai. Mumbai is home to more than 5 million residents is one of the largest cities with the highest water content on earth in addition to wealthy people.