A little more on the period British Bowser 241..........
Here is Lawrence's Garage, a Filling Station in London with two Bowser 241 slide door pumps framing the closest door, off behind shows another set of pumps and not so clearly a large portable compressor at the left rear wheel of a vehicle.
The 241s appear to have round bowl tops with globes that are PETROL.
The pump operator closest is cranking the Bowser as you can see.
The pumps described as "four modern pumps". London Filling Station Bowser cut 241