I guess he was pretty successful, but I think it's mostly his wife's inherited money and you have to count her offshore holdings to make him a billionaire.[0]

I guess he was pretty successful, but I think it's mostly his wife's inherited money and you have to count her offshore holdings to make him a billionaire.[0] [0]: https://www.bbc.com/news/uk-61490481 https://www.bbc.com/news/uk-61490481