J K Rowling richer than the Queen

Just spotted this story: J K Rowling richer than Queen.

“Boy wizard Harry Potter has made author J K Rowling richer than the Queen, according to The Sunday Times Rich List.
The 37-year-old has more than quadrupled her personal fortune in the past two years.
Her £280m makes her the wealthiest woman in showbusiness and Britain’s 122nd richest person – 11 places higher than the Queen. “

That’s an awful lot of money!