This is a simple overtype steam engine. Not much is known about it or the maker, except that it was made in Bradford.
The horizontal brass boiler is 2" diameter x 4 1/8" long. It is fired by a single wick meths burner. It has no water level indication; the instructions say " Fill the boiler to within half an inch from the top ...". There is a spring type safety valve and a dummy chimney (missing).
The engine frame is mounted on the boiler and is a sturdy brass bar. Steam is fed directly from the top of the boiler, via a short length of pipe, to the back of the engine frame, which incorporates the port face. The single acting oscillating cylinder is 1/4" bore x 1/2" stroke. The crankshaft consists of a disk crank at one end and a 1 1/2" diameter steel flywheel at the other.
As acquired, the engine was in need of some TLC. The dummy chimney was missing (and still is). The safety valve was not in serviceable condition. The base and firebox were somewhat rusty. I have cleaned up the engine but not repainted it. I've repaired the safety valve with a new spring.