Britain's Busiest Motorway

Spanning 188 kilometres around Greater London, the M25 is the busiest motorway in Britain. The idea of the M25 was first proposed in the early 20th century, however construction didn't begin until the 1960s and was finally completed in 1986. This six-part documentary series goes behind the scenes with the hidden heroes of the M25: the traffic controllers, patrol officers, engineers and maintenance workers. These hidden heroes deal with anything from multiple vehicle pile-ups to assisting emergency services to clear the roads, making their work a race against time. … MORE