Londoners, and London-bound commuters, rely heavily on the railways, the London Underground and Docklands Light Railway to get around. This means there is a constant need for maintenance, and sections of lines are often closed at weekends for track work and other enhancements to take place. Rail replacement buses are employed whenever there is not an easy alternative rail route. This book features a variety of companies and vehicles engaged on rail replacement services around London and the South East over the last fifty years.