In 2004, Alsop published a book entitled "Supercity" which elicited much debate. It was the subject of a Channel 4 television documentary and an exhibition at the Urbis museum in Manchester. This book described his vision of a "Supercity" – a futuristic conurbation – stretching along the M62 corridor from Liverpool to Hull. It included a discussion of how the increasing interconnectivity of the cities along this corridor is changing the concepts of a "city", and how they can be developed to merge the idea of the rural and urban. It also included a number of architectural ideas of possible buildings and communities in this city. Although there was some political support for his ideas, with "The Times" claiming that former British Deputy Prime Minister John Prescott was a supporter, the Supercity has its critics.