Queen's Diamond Jubilee emblem revealed

A 10-year-old girl has won a competition to design the Queen's official 2012 Diamond Jubilee emblem.

Katherine Dewar, from Chester, was chosen from 35,000 entries in a nationwide competition run by BBC children's programme Blue Peter.

The design - which has a crown poised above the Union Jack alongside columns of diamonds - will appear on everything from posters to commemorative tea cups.

Katherine said she was "really excited" that her design was being used.

"It was great to see my design turned from a drawing into a print that will be used on so many things.

"I'm looking forward to seeing people waving flags with my design on to celebrate the Queen's Diamond Jubilee," she said.

'Thrilled'

One of the judges of the Blue Peter competition, branding expert Martin Lambie-Nairn, said giving a child the responsibility of designing the emblem was "a brave ambition".

Katherine Dewar said she was "really excited" her design had been chosen

Previous emblems - which marked the Queen's Silver Jubilee in 1977 and the Golden Jubilee in 2002 - were created by professionals.

But he said everyone was "thrilled" by the outcome.

"The result is beautiful, fresh and practical," he said.

The Blue Peter competition consisted of three categories - six to eight-year-olds, nine to 11-year-olds and 12 to 14-year-olds.

Blue Peter presenter Barney Harwood and children's book illustrators Tony Ross, Nick Sharratt and Emma Chichester-Clark were also on the judging panel.

Tim Levell, editor of Blue Peter, said the programme was "blown away" by the response to the competition.

Katherine’s design stood out as the winning entry

"The Royal Family and particularly The Queen are clearly much-loved by our audience."

The top 30 children across the three age categories - including Katherine - have been invited to a special tea party at Buckingham Palace next month to celebrate their achievements.

The official emblem can be downloaded free of charge from the Monarchy website for use in all activities associated with the Diamond Jubilee celebrations including community and national events, publications, retail and merchandising.

The winning entry and its designer will be featured on Blue Peter on Monday 21 February at 1635 GMT on BBC One.