My sister lived in Ireland and in London, she rented in many places and not one place was properly insulated or had properly sealed windows. You blew hundreds of pounds every month heating the place and it just leaked out of the windows and walls.

It makes sense because many of the buildings are decades or centuries old so no modern insulation is built in and likely no building standards existed when some were built.

They need to retrofit insulation into houses or demolish buildings and replace them across their entire country to increase energy efficiency. It should be govt funded for the people not for rich landowners.