Also making the list are the founders of Betfred, Fred and Peter Done, Harry Potter author JK Rowling and the boss of JD Wetherspoon Sir Tim Martin. Here's a look at who made the top 20 ...

Meghan, Duchess of Sussex, wears a white engagement ring, with three diamonds, including some from Princess Diana's collection. It is estimated to have cost Prince Harry between £150,000 and £ ...