Pashley Cycles has been building bicycles in the UK since 1926. They have a range of bicycles from city bikes to cargo tricycles. My favorite in their product line is the Pashley Freighmate Cargo Tricycle.
It has absolutely everything anyone could look for in a cargo tricycle. It has electric power assist, independent steering for each of the front wheels (Ackerman steering), disk brakes, turn signals, lights, and even a horn. This is definitely a great alternative for any business that needs to make local deliveries in crowded urban areas or as a run about for staff working in a large facility.
Their website is: http://www.pashley.co.uk