Graphic Designer for primary education resources

I'm looking for a QUALITY graphic designer/illustrator for a range of resources aimed at the primary education market.
We are a publisher and printer of BSL British Sign Language Material - the largest in the UK. We are looking to expand our range by going into the more mainstream area.
We have taken over the website DeafBoooks.co.uk which is currently undergoing a revamp. Wilst we are capable of producing quality books, our design skills are somewhat lacking, if your a heavy weight designer who is fluent in Photoshop, Indesign and illustrator with an eye for detail, imaginative and quick! Please get in touch! the range of work will be from simple stickers, to more complex poster charts and book covers. This will be ongoing work which I will expect to take at least a year part time.
The first project will be a series of wall charts based on themes, examples are on a website http://www.rewardcharts.com/rewardcharts.html
Another will be based on a range of stickers, stamps and note pads on different themes such as the website brainwaves.net.
All work must be in a vector format, and free of copyright.