Reading about Kim's Parsons engine again in SEM reminded me of the puzzling anomaly between the information regarding it's original purchaser received by the previous owner from Parsons and that which Kim received from the successor company. It strikes me that if the engine was definitely used to pump water for fire protection equipment in a factory, then that purchaser is far more likely to have been Mather and Platt than the Admiralty.
BTW. The 'crinkled foil' thingies attached to the carbs are probably flame traps rather than filters.