22/05/2013 14:22 BST | Updated 11/06/2013 01:50 BST

Forbes 100 Most Powerful Women List: Queen Elizabeth And JK Rowling The Only British Entries (PICTURES)

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Britain's Queen Elizabeth II vists the Chelsea Flower Show in London on May 20, 2013. The world-famous gardening event run by the Royal Horticultural Society (RHS) is celebrating its centenary year. AFP PHOTO/POOL/GEOFF PUGH (Photo credit should read GEOFF PUGH/AFP/Getty Images)

Just two Brits have made it into the Forbes list of the most powerful women in the world.

Queen Elizabeth and JK Rowling were left to fly the flag for Britain - and both saw their rankings drop from the previous year.

The Queen was down from 26 to 40, and Harry Potter author Rowling went from 78 to 93.

British-born US Vogue editor Anna Wintour was at 41 in the annual list.

A total of 58 Americans made the 100, which was topped by German Chancellor Angela Merkel for the third year running.

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Photo gallery Forbes Most Powerful Women See Gallery

According to Forbes, this year's index represents women who are pioneers in politics, business, media, humanitarian concerns, entertainment and the technology industry.

It also features a number of women who are listed due to their wealth, with all ranked by money, media presence and impact.

The top figures in the entertainment industry are Beyonce in 17th place, Angelina Jolie in 37th, and Lady Gaga in 45th after dropping 31 places.

Merkel makes her eighth appearance on the list, while former US secretary of state Hillary Clinton, who was second last year, dropped down to fifth place.

The top women in tech are Facebook chief operating officer Sheryl Sandberg in sixth place, IBM chief executive Virginia Rometty in 12th, Hewlett-Packard chief executive Meg Whitman in 15th and Yahoo! chief executive Marissa Mayer in 32nd .

The women, who are from 26 countries, have 153 million Twitter followers between them and 16 of them founded their own companies.

There were 15 newcomers this year, including South Korean president Park Geun-hye in 11th place, Tory Burch, chief executive of Tory Burch in 69th and Spanx founder Sara Blakely in 90th.

Moira Forbes, president and publisher of ForbesWoman, said: "This year's Power Women exert influence in very different ways, and to very different ends, and all with very different impacts on the global community.

"Whether leading multibillion-dollar companies, governing countries, shaping the cultural fabric of our lives or spearheading humanitarian initiatives, collectively these women are changing the planet in profoundly powerful and dynamic ways."