While some areas, similar to these with heavy industry nearby, could also be linked to a hydrogen network, that is unlikely to be more than a small minority of households. https://www.brightonedu.com/%e0%b8%ad%e0%b8%9a%e0%b8%a3%e0%b8%a1%e0%b8%9c%e0%b8%b9%e0%b9%89%e0%b8%9a%e0%b8%a3%e0%b8%b4%e0%b8%ab%e0%b8%b2%e0%b8%a3-%e0%b8%9a%e0%b8%a1%e0%b8%88-%e0%b8%81%e0%b8%a3%e0%b8%b8%e0%b8%87%e0%b9%84%e0%b8%97/