What’s wrong with Britain’s economy? With Sam Bowman

Episode Summary

Executive Summary: The episode argues Britain’s weak growth is mainly a supply-side problem caused by restrictions on building homes, infrastructure, and energy. Sam Bowman claims the UK is uniquely constrained versus peers: London is overburdened, planning rules block development, infrastructure is slow and costly, and high energy prices deter investment. He says removing these bottlenecks could unlock a decade of stronger growth.

Main Topics: Britain’s long-run growth stagnation (Priority: 5/5): The conversation frames UK stagnation as a break from the strong convergence seen from the late 1970s to mid-2000s, with the UK now far below its potential relative to peers. Housing scarcity and planning reform (Priority: 5/5): Bowman argues the post-1947 planning system empowered local vetoes at zero cost, sharply reducing private housebuilding and raising land values when permissions are granted. Infrastructure cost and delivery failures (Priority: 5/5): The episode highlights how UK infrastructure projects are unusually expensive and delayed, with permissive processes for objectors and poor cost control driving overbudget megaprojects. Energy prices and decarbonisation (Priority: 5/5): High industrial energy costs are presented as a major drag on manufacturing, data centers, biotech, and broader investment, worsened by reliance on expensive clean power and slow nuclear deployment. London as the core economic constraint (Priority: 4/5): Bowman argues the UK is unusually dependent on London, so housing and transport constraints there have outsized national effects compared with countries that have multiple large growth hubs. Policy prescriptions: upzoning, local infrastructure, nuclear approvals (Priority: 4/5): His ideal reforms include much denser London development, easier private/public infrastructure delivery, and a streamlined approval pathway for standardized nuclear plants. State vs private sector roles (Priority: 3/5): The discussion balances market-led development with selective state involvement, especially where nuclear capital costs and risk remain too high for private investors alone.

Key Arguments: The UK has likely underperformed by roughly 25% versus its long-run pre-2008 trend, making stagnation a major national issue. Britain is especially unlucky because it has both the US-style problem of not building enough and the European problem of expensive energy. Housing scarcity is not just about rents; it limits where workers can live, which jobs they can access, and where firms cluster and innovate. Planning rules after 1947 removed the cost to local authorities of blocking development, creating an effective veto over new homes. Infrastructure projects are made expensive by both weak cost discipline and a system that gives objectors disproportionate power; this reduces the number of projects built. High energy prices harm not only heavy industry but also services like data centers and biotech, and they also deter new entrants from scaling up. The UK should focus on unlocking supply in high-value places like London rather than relying mainly on demand management or generic growth slogans. The state has a role, especially for nuclear power and some local infrastructure, but current public-sector building is constrained by the same cost and planning problems as private sector projects.

Data Points: UK population vs France: Pretty much the same - Used to underline Britain’s housing shortage relative to a comparable country. UK homes vs France: Nearly 20% fewer homes - Opening statistic cited as evidence of underbuilding. Industrial energy price change: Doubled / increased by 150% in inflation-adjusted terms - From the early 2000s to the 2020s, presented as a key drag on industry. Tram project cost ratio: 2.5x more expensive than French projects per mile - Used to illustrate UK infrastructure cost overruns. Economic shortfall vs trend: About 25% poorer than could be - Bowman’s estimate of the UK gap relative to the 1979-2008 trend. Housing value uplift in London farmland: More than 1,400 times - If farmland in Greater London gets permission for housing, its value rises dramatically. Housing value uplift in southeast farmland: About 180 times - Comparable uplift for land around London when rezoned for housing. Lower Thames Crossing planning application: 360,000 pages - Example of planning complexity and delay for a major infrastructure project. Lower Thames Crossing planning application cost: £297 million - Cost of the application itself, highlighted as absurdly high. World’s longest tunnel cost comparison: Less than half that amount - Norwegian tunnel comparison used to show planning costs can rival or exceed build costs. Crossrail / Elizabeth Line: Second most expensive metro project ever built - Used as evidence of UK infrastructure cost inflation. HS2: By far the most expensive high-speed rail line ever built - Cited as another example of extreme infrastructure cost. Lab space vacancy in Cambridge: 1% vacant at any given time - Illustrates extreme scarcity in UK high-value research space. Productivity effect of density in British cities: 10% more employed people per acre for 1% productivity increase - An OECD finding discussed as evidence on agglomeration effects. Budget growth assumption: About 1.5% growth toward end of decade - Used as evidence that government forecasts are too weak for the UK’s needs.

Pivotal Quotes: "I would say it's probably seven." — Sam Bowman: His estimate of how much of Britain’s economic problems are due to blocked building. "Britain has done badly over the past 15 years because it has, quote, banned the investment in housing, transport, and energy that it most vitally needs." — Narrator: Opening thesis of the episode summarizing the essay’s central claim. "London should have 20 million people in it. It’s crazy that it doesn’t." — Sam Bowman: His ideal policy vision for much denser housing and urban growth in London.

Implications: If Britain eases planning, infrastructure, and energy constraints, it could raise productivity, attract investment, and revive growth. For listeners, the message is that reforming supply bottlenecks—not just boosting demand—may be the fastest route to higher living standards.