4S-018-005 LSWR Class B4 0-4-0T BR Late Crest 30096 - Steam Tank LocomotiveThe London and South Western Railway B4 class was a class of 0 4 0 tank engines originally designed for station piloting and dock shunting. They were later used extensively in Southampton Docks for nearly half a century. The locomotives were designed by the London and South Western Railway (LSWR) Locomotive Superintendent William Adams. They were unusual in having inside Stephenson valve gear but outside cylinders and coal bunkers on the footplate