As you can guess from my "handle" I live in the Severn Valley within earshot of the SVR and within a 20 minute cycle ride to Arley, Highley & Hampton Loade.
Also am a working volunteer on the railway; booking office & being trained as signalman.
But never can answer those difficult questions about valve gear on the Flying Pig or which works built the Fruit "D" behind the Highley signalbox. Hopefully pick up some useful info from here.