Demographers estimate that the UK population will increase to approximately 75 million by 2051. If this is true, the increase equals the population of two cities the size of London.
Therefore the UK is going to have to build many more houses. Even if demographers have over-calculated, life expectancy is increasing and there more households with single occupancy - both factors increase the demand for housing.
With just four percent of English soil populated there's plenty of space. Just four percent.
Obviously with your massive size it makes it a lot more cramped.