DVD Steam’s Unsung Heroes of the 20th CenturyDVD Steams Unsung Heroes of the 20th Century 15. 99 A look at the great variety of locomotives still at work in Britain. This dvd looks at the variety of locomotives which tend to be rarely considered amongst the great publicity surrounding the Pacific or larger tender locomotive. We search out these often unique engines scattered around the UK at railways such as the Tanfield light railway, Middleton, the Kent & East Sussex and other preserved lines