Jolly-sailor station in 1845, showing the bridge carrying Portland Road in the background and the atmospheric propulsion system pumping station, with its Gothic Tower/chimney/exhaust vent, in the foreground.
Perhaps this is where Sextus Dyball got inspiration in designing St Valery House (of Pickles fame), which coincidentally was built on the site of an old inn, the Royal Oak.,
do you know what the atmospheric propulsion system pumping station was used for