A couple of Steam trains

Just thought I'd post these here if anyone was interested! The stock on this line tends to change a fair bit.

 

You haven't told us which line it is! Some info on the stock in your photos would also be helpful. Thanks

 

In the absence of an answer and treating it as a bit of a photo quiz, the answer appears to be the Strathspey railway.

The first and third pictures look like Andrew Barclay 0-4-0DH works no 517/1966.
http://www.uklocos.com/final-results.asp?action=display&id=3417

The second picture looks like Andrew Barclay 0-4-0ST works no 2020/1936 with (I think) R&H 0-4-0DM works no 270756/1950.
http://www.uklocos.com/final-results.asp?action=display&id=3415
http://www.uklocos.com/final-results.asp?action=display&id=3439

Incidentally, I make that only one steam train (sic), not a couple of them.

 

I wonderd if it was the Caledonain Railway, Brechin? The scenery doesn't look like the Strathspey to me.

Richard.