article_snippet.sent: Microsoft owner Bill Gates: £45.5 billion .
article_snippet.sent: Facebook founder Mark Zuckerberg: £17 billion .
article_snippet.sent: Landlord Gerald Grosvenor: £7.7 billion (Britain's richest person)
article_snippet.sent: Chelsea Football Club owner Roman Abramovich: £5.4 billion .
article_snippet.sent: Virgin founder Richard Branson: £3 billion .
article_snippet.sent: Film director Steven Spielberg: £2 billion .
article_snippet.sent: US business tycoon Donald Trump: £2.7 billion .