Special thanks to Professor Les Carr from the University of Southampton. He has put up with a constant stream of computing questions over the last five years and saved me from some embarissing mistakes. His generosity with his time and his patience with my endless questions is really appreciated.
Thanks also to my local CAS hub that meets at the University of Southampton and to Dan Gardner and Tig Williams who co lead it with me and are a great source of enthusiam and knowledge of all aspects of computing in Secondary education.
Thanks also to CAS for some great computing science discussions over the years. If you are a Computing Science Professional or a teacher and would like to get involved then I recommend joining CAS. CAS is a friendly grassroots organisation dedicated to promoting Computer Science in Schools.
Thanks to Mark Dorling