Andrew Williamson Andrew Williamson has worked as a lead concept artist on all of the Harry Potter films, including the forthcoming Harry Potter and the Deathly Hallows: Part I and Part II. Trained as an architect at Cambridge University and certified in 1990, he worked on the new British Library at Euston and a number of commercial and residential projects. His work has been published in numerous architectural publications, The Art of Batman Begins (2005), and he is currently developing a series of comic book projects.