 Filmed secretly over a period of 5 years at BAFTA headquarters in  Piccadilly, London. Every area from the ground floor to the roof was  used to create almost all the locations required for the film,  including: Projection Room, Arabian Palace, Job Centre, Cinecittà  Film Studio, Parisian Bar, Cinema, New York and London Production  Offices, Elevator, Toilets, Cleaners Cupboard and special sets for  the dream sequences. George Warner also kept all of his costumes  (including pajamas) at work in his locker for several years, as most  filming was unscheduled and had to be fitted in around official  bookings within the building.