J.K. Rowling is the only woman and author on the Forbes ‘U.K.’s Billionaires’ list with a worth of $1 billion dollars.

Joanne (JK) Rowling
Net Worth ($bil): 1
Net Worth (£bil): 0.509
Age: 41

Rowling is the only author on our list. The seventh (and last) installment of the Harry Potter series, Harry Potter and the Deathly Hallows hit bookstores in July and worldwide sales of the first six topped 325 million copies. The film series, from which Rowling enjoys a cut of royalties and merchandising has grossed $3.5 billion, and there’s no doubt three more movies to come.