Jessica led the event from start to finish, beating Germany's Jennifer Oeser by 238 points.

Previous British successes in the competition include Brunel Alumnus Kelly Sotherton's bronze in 2007 and Denise Lewis's world championship silver medals in 1997 and in 1999. 

While studying Psychology at the University of Sheffield, Jessica needed some flexibility from her department in order to pursue her dream.

"The Psychology Department was really supportive of me during my three years there," says Jessica. "It was especially hard in the third year when I was working on my dissertation. I had to balance my academic work with training and technical work. I train six days a week, but luckily the degree was flexible in that I didn't have to spend lots of time sitting in lectures. I'm really glad I did it. I met lots of people, and the University was a great help with funding when I competed at the World University Championships."

Jessica has had to overcome injury and disappointment in recent years, missing out on the 2008 Beijing Olympics as the result of a stress fracture of her right ankle, but is now set to be one of Team GB's great hopes at London 2012. 

Part of Jessica's success can also be credited to her specialist Javelin Coach Mick Hill the Director of Athletics at Leeds Carnegie.   "I have a longer run-up now and that's made a big difference," Jessica said. "I've been working with Mick for three years so it's taken a long time to get it right."

For more information and to view highlights of Jessica's performance please click here