Jonathan Portes: Economist, Academic and Public Policy Expert

Jonathan Portes is a British economist and public policy expert whose career has combined government service, academic research and public commentary. Over several decades, he has worked on major economic questions involving immigration, labour markets, welfare, fiscal policy and the economic consequences of Brexit. He is currently Professor of Economics and Public Policy at King’s College London and a Senior Fellow of the Economic and Social Research Council’s UK in a Changing Europe initiative.

Early Career and Government Experience

Jonathan Portes began his professional career at HM Treasury in 1987. His early years in government gave him extensive experience of economic analysis and policymaking and eventually led to senior positions within the UK civil service.

Between 2002 and 2008, Portes served as Chief Economist at the Department for Work and Pensions. In that role, his work was connected with important questions concerning employment, welfare and social security. He subsequently became Chief Economist at the Cabinet Office, serving from 2008 to 2011.

His Cabinet Office period coincided with the global financial crisis, one of the most significant economic events of the modern era. According to his King’s College London biography, he led the Cabinet Office’s economic analysis and economic policy work during the financial crisis and around the G20 London Summit in April 2009.

This government background became an important part of Portes’s later academic career because it gave him direct experience of how economic evidence is used within government and how policy decisions interact with real-world economic conditions.

Director of the National Institute of Economic and Social Research

From 2011 to 2015, Portes was Director of the National Institute of Economic and Social Research, one of Britain’s longstanding independent economic research institutions. He later continued his association with the institute as a research fellow and senior fellow.

His work at and around NIESR strengthened his reputation as an economist interested in connecting research with practical policy questions. His research interests have included labour markets, immigration, fiscal policy, social security and welfare, as well as the evaluation of public policy.

The combination of government experience and economic research has remained a defining feature of his professional career. Rather than concentrating exclusively on theoretical economics, Portes has frequently examined how economic policies operate in practice and what available evidence can tell policymakers.

Academic Career at King’s College London

Portes is now Professor of Economics and Public Policy at King’s College London. His academic work covers several interconnected areas, including immigration and labour mobility, Brexit, labour markets, fiscal policy and welfare.

He is also a Senior Fellow of the Economic and Social Research Council’s UK in a Changing Europe initiative. The programme focuses on research concerning the UK’s changing relationship with the European Union, making Portes’s expertise particularly relevant to debates surrounding Brexit and its economic consequences.

His academic profile shows a substantial body of research covering immigration, labour supply, welfare and economic policy. His work has also involved research projects supported by organisations including the Economic and Social Research Council and the Nuffield Foundation.

Jonathan Portes and Immigration

Immigration has become one of the central subjects associated with Jonathan Portes’s research. He has studied how migration affects the UK economy, employment, labour supply and public policy.

His work does not treat immigration simply as a question of population movement. Instead, it examines the interaction between migration policy, employers, labour demand, wages, employment and wider economic conditions.

Portes has also examined the major changes to Britain’s immigration system following Brexit. His research has considered the end of EU free movement and the introduction of a new immigration system, as well as the resulting changes in the composition of migration to Britain.

A 2025 paper by Portes examined the changing composition of immigration to the United Kingdom after Brexit, including changes in countries of origin, sectors and occupations.

Research on Brexit

Brexit has been another major theme in Portes’s work. His research has examined how Britain’s departure from the European Union affected immigration and labour supply.

In a 2026 paper with John Springford, Portes studied the impact of Brexit on UK immigration and labour supply using a synthetic difference-in-differences approach. The research examined employment among foreign-born workers and found a substantial change in the composition of migrant labour following Brexit. The paper reported that the decline in employment among EU-origin workers was more than offset by increased employment among non-EU workers after the post-Brexit immigration system was introduced.

This research illustrates an important feature of Portes’s approach: rather than looking only at headline migration numbers, he has examined how changes in policy can alter the composition and sources of labour entering the UK economy.

Recent Research and Publications

Portes remains active as a researcher. His recent work includes a 2026 study titled “Control Without Credibility: Immigration to the UK Since the Brexit Referendum.” The research examines developments in UK migration since 2016, including changes in EU and non-EU migration, labour-market effects and the post-Brexit policy framework.

His research record also includes work on the UK’s two-child benefit limit and fertility, demonstrating that his interests extend beyond immigration and Brexit. He has investigated questions concerning labour markets, social security, welfare and the use of evidence in policymaking.

His publication history reflects a continuing interest in subjects where economics intersects with major social and political policy questions.

Public Commentary and Media Work

Beyond academic publications, Portes has become a familiar commentator on economic and public policy issues. King’s College London notes that he regularly publishes articles on economic issues in the UK and international press and frequently contributes to print and broadcast media. He has also given evidence to parliamentary committees, including the Treasury Committee and Home Affairs Committee.

This public-facing work has allowed him to explain economic research to audiences outside universities. His commentary frequently focuses on subjects such as immigration, labour markets, Brexit and government economic policy.

Books by Jonathan Portes

Portes has also written books aimed at wider audiences. His work includes “Capitalism”, published by Quercus, while his book “Immigration: What Do We Know and What Should We Do?” examines evidence and arguments surrounding immigration. NIESR identifies the latter as his most recent book.

These publications complement his academic research by presenting complex economic questions in a form intended for broader public discussion.

Why Jonathan Portes Remains Relevant

Jonathan Portes’s career brings together several areas that are closely connected to Britain’s recent economic history. His government experience covered the financial crisis and senior economic policymaking, while his academic career has focused increasingly on immigration, labour markets, Brexit and public policy.

His recent research demonstrates that these subjects remain central to his work. Studies published or released in 2025 and 2026 have continued to examine the consequences of Brexit for immigration and labour supply and the changing structure of migration to the UK.

For readers interested in understanding the relationship between economics and public policy, Jonathan Portes offers a career spanning government, research institutions, academia and public commentary. His work continues to explore how evidence can help explain major changes in the British economy and society.

For more biographies, professional profiles and stories about notable people and ideas, readers can explore The Pure Magazine, where a wide range of subjects are covered with an emphasis on informative and accessible storytelling.

FAQs About Jonathan Portes

Who is Jonathan Portes?

Jonathan Portes is a British economist and Professor of Economics and Public Policy at King’s College London. He is known particularly for research into immigration, labour markets, Brexit and economic policy.

Where does Jonathan Portes work?

He is a Professor of Economics and Public Policy at King’s College London and a Senior Fellow of the UK in a Changing Europe initiative.

What is Jonathan Portes known for?

He is particularly known for his research and public commentary on immigration, labour mobility, Brexit and the UK economy.

Did Jonathan Portes work for the UK government?

Yes. He began his career at HM Treasury and later served as Chief Economist at the Department for Work and Pensions and the Cabinet Office.

Was Jonathan Portes Director of NIESR?

Yes. He served as Director of the National Institute of Economic and Social Research from 2011 to 2015.

What has Jonathan Portes researched recently?

You May Also Readr https://thepuremagazine.co.uk/