The London Transport Stock was hugely popular when it was released in 2015 and now DC kits and Legomanbiffo have produced a new ESU sound decoder twin pack to bring these units to life. MIKE WILD explores its potential and shows how he went about upgrading a four-car set with additional functions.

Above: The Bombardier built S Stock units are now the sole mode of transport on London Underground’s subsurface lines. On January 22 2019, an S7 District Line set pauses at Earls Court. Mike Wild.

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