After two operations on her right ankle, Stevenson, experimenting in the 62-67kg category this season, has gone on to become champion at last year's British Taekwondo Championships and the 2010 European Championships in St Petersburg.
Looking ahead to the International Open at the Manchester Regional Arena on 25-26 September, the Doncaster star added: "I'll be looking for a good result and then hope to take some good form through to the 2011 World Championships and London 2012."
Meanwhile, 19-year-old Cook goes from strength to strength after narrowly missing out on a podium finish at the Beijing Olympics two years ago.
The Mancunian fully made his mark on the world stage last year when he beat world and Olympic Champion Steve Lopez.
The knock-out victory came during a World Tour match in Mexico with Cook describing his beaten opponent as the "Muhammad Ali" of the sport and the win as the greatest of his career.
Cook is determined to win gold in 2012
Cook secured his first senior gold at the European Championships in May with an impressive defeat of Greece's Nikolaos Tzellos in the under 80kg category.
On topping the world rankings, the fighter from Dorset said: "Becoming number one was a challenge I set myself for this year and I am ecstatic to have achieved it so early on.
"We have a couple more big events coming up. However, it is hard not to look ahead to London 2012 which is my biggest goal and the main focus of all the preparation work I am doing at the moment."
Cook was one of the youngest British competitors at the 2008 Olympics, where he made the semi-finals, only to have his hopes dashed when he was controversially adjudged to have lost his semi-final against Italian Mauro Sarmiento.
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