The lamp was used by railway staff such as guards and signalmen, as well as miners before widespread electrification. 
The manufacturer, The Premier Lamp & Engineering Co, was based in Leeds.
The lamp operates using a chemical reaction between water (stored in the top reservoir) and calcium carbide (stored in the bottom) to produce acetylene gas, which is then ignited for light. 
Measuring 18cm wide x 26cm high x 12cm deep