Phil, it's a Bachmann Davenport. At least one store here in the U.S. is selling them very cheaply. I'm sure someone can point you in the right direction.
It's got a Backwoods Miniatures detailing kit, although when I got mine last year they only had one more left.
Mine also has a Zimo decoder and sound system that Axel at Train Line USA installed, which is very good.
The rest was repainting and adding extra detail and weathering by me.
It's a nice little loco I think.