I have written six children’s books, two series in total. The first, three terrible incidents with a character named Agatha Bilke, were short-listed for lots of awards and published by Short Books. The first book was also Sunday Times Children’s Book of the Week. You can buy the book here.
Also, see the Agatha Bilke page here – there’s a song too.
The second series of books are The Magical Peppers, published by HarperCollins and features twins, a bad magician and lots of (actual) magic tricks. You can view the Peppers books here and see the Magical Peppers page here.