WizAnn is the number one provider and creator of study aids and materials for the Knowledge of London, The Knowledge is the name given to the study used to become a Black Cab Driver in London. If you want to be a Licensed London Taxi Driver then this is the place to be. We pride ourselves on being at the forefront of conceptual ideas and creations. Our aim is to provide the fastest method and easiest way to achieve your goal of completing the Knowledge of London. Dean Warrington is the founder and principal of WizAnn Knowledge School, he has been teaching the Knowledge since 1996 and has been a licensed London Taxi driver throughout that time.