Stephen Broadberry

British economic historian (b. 1953), professor at Nuffield College, Oxford and the University of Warwick. Trained at LSE; one of the most influential figures in modern long-run quantitative economic history. The principal architect of the multi-country historical-national-accounting reconstruction project that has reset the empirical baseline for both the Industrial Revolution and Great Divergence debates.

Intellectual program

Broadberry’s career-long contribution has been the multi-century reconstruction of GDP per capita for major economies, using historical-national-accounting methods rigorous enough to support cross-country comparison. The flagship is British Economic Growth 1270–1870 (2015, with Bruce Campbell, Alexander Klein, Mark Overton, and Bas van Leeuwen), which extended the British national accounts five centuries before the conventional Industrial Revolution period. The book combined sectoral output reconstructions for agriculture, industry, and services with the Cambridge Group’s parish-register-based population estimates to produce annual real-GDP and GDP-per-capita series 1270–1870.

The British reconstruction was followed by parallel reconstructions for China (with Hanhui Guan and David Daokui Li, JEH 2018), India (with Bishnupriya Gupta, JGH 2015), the Netherlands (with van Zanden), Italy (with Malanima), Spain (with Álvarez-Nogal), Japan (with Fukao), and others. The result is the first quantitatively comparable cross-country long-run GDP-per-capita data set, and the empirical baseline against which most contemporary IR/GD claims are now tested. The Maddison Project Database 2023 incorporates substantial Broadberry-led inputs.

The methodological commitment is strict: build the reconstruction from sectoral output evidence (not just trade or wage proxies); be transparent about assumptions; allow others to recompute with alternative assumptions. The downside is that the reconstructions are computationally and source-intensive — Broadberry’s work is the labor of decades and many collaborators.

Reception and contestation

Broadberry’s reconstructions are now the field’s standard empirical reference, replacing the older Maddison estimates for almost all comparative-economic-history purposes. His empirical findings have substantially eroded the strong-form California-school parity claim: Chinese GDP per capita peaked in the Northern Song around 1080 and stagnated through the Ming and Qing, with NW Europe substantially ahead of even the Yangzi delta by 1700. Indian GDP per capita declined substantially under colonial rule (1820 to 1870). The British series shows centuries of pre-IR growth rather than a sharp 18th-century take-off.

Specific Broadberry numbers are themselves contested at the margins (notably Deng & O’Brien on the Ming-era Chinese government-expenditure assumptions); the empirical baseline remains genuinely unsettled at the level of specific decade-decade revisions. But the direction of the revisions — earlier and larger pre-1800 European-Asian gap than the California-school synthesis allowed — is broadly accepted.

Broadberry has also been a major contributor to the comparative-economic-history community as an editor (the Cambridge Economic History of Modern Britain; the Cambridge Economic History of the Modern World, 2021) and as a long-running organizer of the field’s quantitative agenda.

Associated positions

• Meta: when and how big? (GD) — central voice in the parity-vs-revisionist meta-debate; his data underpins the revisionist position.
• Meta: no revolution / gradualism (IR) — his GDP data underpins the British gradualist framing.
• Coal & resource geography (IR) — his China data is the principal challenge to the strong-form Pomeranz parity claim.

Key works

• With Mary O’Mahony and others: Productivity and Performance in the Services Sector (1996).
• With Bruce Campbell, Alexander Klein, Mark Overton, and Bas van Leeuwen: British Economic Growth 1270–1870 (Cambridge, 2015).
• With Bishnupriya Gupta: “Lancashire, India, and Shifting Competitive Advantage in Cotton Textiles, 1700–1850” (Economic History Review, 2009).
• With Hanhui Guan and David Daokui Li: “China, Europe, and the Great Divergence: A Study in Historical National Accounting, 980–1850” (Journal of Economic History, 2018).
• With Kyoji Fukao (eds): The Cambridge Economic History of the Modern World (2 vols, 2021).