18: Brexit–Sectoral Analyses or Impact Assessments?

Episode Summary

Executive Summary: This episode examines which UK sectors are most exposed to a hard Brexit if the UK leaves the EU without a deal and falls back on WTO rules. Meredith Crowley explains a product-level tariff analysis showing transport equipment, machinery, chemicals, and fuel are most exposed, with additional risks from anti-dumping duties, quotas in agriculture, and loss of preferential trade access. The discussion also highlights how supply chains, geography, and services could amplify the shock.

Main Topics: Hard Brexit and WTO fallback (Priority: 5/5): The episode frames the risk of a disorderly UK exit from the EU and explains that, without a deal, trade would revert to WTO terms rather than a bespoke arrangement. Sectoral exposure analysis (Priority: 5/5): Meredith Crowley describes a method that maps 5,000 detailed export products into tariff categories to identify which UK sectors face the highest tariff exposure. Transport equipment as the most vulnerable sector (Priority: 5/5): Cars, trucks, airplanes, and related components are highlighted as the largest and most exposed export category, with substantial value at risk from medium and high tariffs. Compounding effects of supply chains (Priority: 4/5): Even low tariffs can become costly when parts cross borders multiple times, illustrating how integrated production networks raise the effective burden of Brexit-related trade barriers. Agriculture, quotas, and uncertainty (Priority: 4/5): Agricultural trade is governed by tariff-rate quotas rather than simple tariffs, making the no-deal outcome especially uncertain and more likely to trigger disputes. Anti-dumping and anti-subsidy risks (Priority: 5/5): The episode explains that EU defensive trade measures could become more likely after Brexit, substantially increasing the share of exports facing very high tariffs. Limits of models and unmeasured services effects (Priority: 4/5): The speakers note that the analysis covers goods only and does not include services or relocation responses, meaning the full Brexit impact could be larger or differently distributed.

Key Arguments: The UK-EU relationship would shift to WTO rules in a no-deal Brexit, exposing exports to tariffs and quotas similar to other WTO partners. A detailed product-level approach is better than broad sector reports for identifying where the largest tariff exposure lies. Transport equipment is the most at-risk sector because it is export-heavy, highly integrated with EU supply chains, and subject to relatively high tariffs. Small tariffs can accumulate through repeated cross-border processing, raising costs far beyond the headline rate. Agriculture is difficult to assess because tariff-rate quotas create nonlinear and politically contested barriers rather than simple default tariffs. Anti-dumping and anti-subsidy duties could meaningfully raise the share of UK exports facing high barriers if the UK loses EU political protection. Models are useful baseline tools but may understate longer-run responses such as firms relocating production to the EU to avoid tariffs. The analysis excludes services, which matters because financial services are a major UK export and their barriers would be regulatory rather than tariff-based. Leaving the EU may also reduce UK firms' access to third-country free trade agreements negotiated through the EU, creating an additional downside not captured by the tariff analysis.

Data Points: Number of sectoral analyses published by UK government: 39 - The government released 39 sectoral reports on Brexit-related impacts. Detailed products analyzed: 5,000 - Crowley’s method uses roughly 5,000 detailed UK export products. Value of transportation equipment exports: about £30 billion - One of the largest UK export goods sectors to the EU. Value of machinery exports: a little bit more than £30 billion - Another major UK export category. Value of chemicals exports: about £30 billion - Includes pharmaceuticals and is a major export sector. Value of fuel exports: about £24 billion - Oil and gas exports to the EU. Share of UK exports to the EU at risk of 10%+ tariffs: about 15% - Under regular WTO tariffs and quotas only. Share of total UK exports to the EU entering duty-free: about one-third - Even in a no-deal scenario, some exports would remain tariff-free. Value of transport equipment at risk of medium/high tariffs: about £18 billion - The most exposed industry in Crowley’s analysis. Tariff on some truck exports: more than 15% - Big lorries/trucks face higher tariffs than cars or some components. Tariff on diesel engines: about 4% - An example of a lower tariff that can still add up if goods cross borders repeatedly. Share of EU imports facing anti-dumping duties: 8% - Over the last 20 years, showing how common these defenses can be. Share of UK exports to the EU at risk of very high tariffs including defensive duties: over one quarter - Exposure rises sharply when anti-dumping and anti-subsidy duties are included. Steel exports going to the EU: about three-quarters of UK steel exports - Illustrates how dependent the sector is on EU market access. UK steel production exported overall: nearly 50% - From the government sector report cited in the discussion. Automotive sector share of total UK value added: 0.8% - Government sectoral analysis cited to show economic importance. EU share of automotive sector exports in 2016: almost half - Indicates strong dependence on the EU market.

Pivotal Quotes: "The most concerning industry is transport equipment." — Meredith Crowley: She identifies the sector with the largest exposure to medium and high tariffs under a hard Brexit. "over one quarter of UK exports to the EU could be at risk of very high tariffs" — Meredith Crowley: This refers to exposure after adding anti-dumping and anti-subsidy duties to standard WTO tariffs. "I'm not a fan of economic models because they have all proven wrong." — David Davis: The Brexit secretary’s skepticism toward model-based economic assessments is discussed in contrast to Crowley’s approach.

Implications: A no-deal Brexit would hit some UK manufacturing sectors, especially autos and machinery, far more than others and could trigger supply-chain disruption, relocation, and regional job losses. The real impact may exceed tariff estimates once services, quotas, and defensive trade actions are included.