The next year EC Roberts, Cardiff’s city surveyor, built a Civil Defence Control Centre on Allensbank Road, next to what was once a crucial location for the city’s water supply.
Y flwyddyn wedyn adeiladodd EC Roberts, Syrfëwr Dinas Caerdydd, Ganolfan Rheoli Amddiffyn Gwladol ar Heol Allensbank, nesaf at leoliad hollbwysig ar gyfer cyflenwad dŵr y ddinas ar un adeg.