But JK has some way to go before she beats the richest person in the country.
That place is taken by the Duke of Westminster who has a whopping £4.9 billion!
In the separate sporting list, it's no surprise to hear England skipper David Beckham takes the top spot with a glittering £50 million.
Closely behind him in second is boxer Prince Naseem Hamed with £30 million.
And Ozzy and Sharon Osbourne hit number nine in the separate showbiz list with £85m, thanks to their massive hit MTV show.