A lack of infrastructure development combined with a population being artificially increased by high levels of immigration, which is applying downward pressure on wages while pushing property costs (the source of most of the UK's problems) ever higher.
A population increase of around 1% per year may not seem huge until you consider what 1% of the UK road network or 1% of the NHS actually looks like, and what it'd take to build infrastructure and expand services at that rate year upon year.
The reality of building infrastructure in the UK is HS2 - a 20+ year project to build a little over 100 miles of high speed railway (with future northern phases predictably cancelled), at a cost over over half a billion quid per mile - it'll likely put any government off attempting any significant infrastructure construction ever again.
A population increase of around 1% per year may not seem huge until you consider what 1% of the UK road network or 1% of the NHS actually looks like, and what it'd take to build infrastructure and expand services at that rate year upon year.
The reality of building infrastructure in the UK is HS2 - a 20+ year project to build a little over 100 miles of high speed railway (with future northern phases predictably cancelled), at a cost over over half a billion quid per mile - it'll likely put any government off attempting any significant infrastructure construction ever again.