> My claim is that the UK is now a lot more like Poland than it is like the United States in terms of the kinds of growth it needs to do – driven by improved use of existing technology and inputs, and accumulation of capital, rather than driven primarily by technological advancement.

The author goes on to never support this thesis, and instead complains about British politics and that UK growth isn't quite as fast as the US.

The UK has a higher GDP per capita than France. They are in no way a "developing" country.

Does the UK need more tractors? Is there high unemployment (labor underutilized)? It does not seem so. What are the inputs and technology that the UK needs to improve?