For almost as long as there have been railways, there has been 'departmental' rolling stock. This name is used to describe any vehicle that operates in non-revenue earning capacities. Ranging from engineers' vehicles, to generator vans, to vehicles used to help move specific types of stock on the network, these have long been the unsung heroes of Britain's rail network, helping to keep things running and working hard behind the scenes to keep the country's passenger and freight traffic running smoothly. With this terrific collection of unpublished images, perfect for rail enthusiast and modeller alike, Rich Mackin documents a variety of these interesting and often under-appreciated members of our railway system.