The Travolators

Approximately 40,000 people use the Waterloo & City Underground line every day. For years they had walked to and from the platforms at the Bank by a steep passage known as the 'Drain'. But know, they can ride up and down on the first moving pavements in Europe - the Travolators. This film shows the construction of the Travolators which was achieved without disrupting normal traffic.

• Tony ThompsonDirector