Thanks for the nice comments, chaps and chapesses.
I've recently been given an old picture, dated 1893, of what is believed to be Bury, Thorn & Sons first locomotive.
The reality...
Manning Wardle class F, built from the Slaters kit. It's well out of period for the layout but I liked the look of it. I haven't got it to work properly yet though. The chassis was a real PITA to put together and I've not made a very good job of it. At the moment I can't test it as my Dynamis is kaput so I haven't bothered chipping it either but the wheelbase is so short that it won't fit on my 12v DC rollers. I may have to buy a couple of lengths of track to test it on with DC but if it won't run properly it'll end up in a display case.