Kieron and he is a  LB&SCR E2 class (extended side tanks)

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2 twin engines that are L&YR Class 28

the top one is Shadow and the bottom one is Dark

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The GWR 5700 Class, or 57xx class, was a class of 0-6-0 pannier tank steam locomotive, built by the Great Western Railway

this engine is Sarah

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Apps is a GWR 1400 Class 0-4-2T tank engine.

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Jonson 

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Lily is a LNER (London & North Eastern Railway) Class V4 2-6-2 locomotive.