I received information about a contest that I thought sounded interesting, for children ages 5-11 in the UK. From their web site:
The Little Tiger Press Young Writer and Illustrator Awards 2010, sponsored by PriceMinister, are designed to encourage reading and creativity in children from an early age. This national competition aims to promote a life-long love of reading, writing and illustrating.
Children either choose one of two stories to draw an illustration about, or one of two illustrations to write a story about. Entries are submitted by the schools. The winners receive vouchers to spend on the PriceMinister web site, and the winners' schools also receive vouchers. The first place winner's school receives an £800 voucher, and the second place school receives a voucher for £400.
The closing date for entries is 23rd July 2010.