Plot: On the final leg of his journey between the cathedral cities of Norwich and Chichester, Michael Portillo discovers the history behind the extraordinary Pavilion at Brighton and learns that Queen Victoria was not an admirer of the Prince Regent's flamboyant taste. Michael finds that while above ground the railways brought day trippers to frolic in fashionable Brighton, underground, Victorian engineers built a magnificent network of sewers more than 40 miles in length, which are still functioning today