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Steam engine needs young volunteers to secure future

7 May 2014 Last updated at 12:28 BST

It has been running since the 1940s but now there is concern it could be the end of the line for the Battersea-based steam engine, the Clan Line.

Although the engine is still in perfect condition, most of the volunteers who keep it running are nearly as old as the machine and there is now a call for young people to get involved to secure its future.