Hi Robin, we also visited Lea Wood Pumping Station over the weekend- when travelling on the A6, I always look through the trees for the tell-tale black smoke from the lovely stone chimney, that tells me the engine is in steam.
You are right, it is truly amazing just how 'open' this attraction is- no 'keep off' signs, no intrusive supervision; very refreshing in this day and age.
I only took the one photo but it is a nice one- I got my girlfriend to pose with the engine house in the background and coincidentally, some coal was thrown into the firebox just as I took the photo!
Regards,
John.