Mark Williams is an economist with twenty years of experience in the economics, regulation and strategy of the telecoms, media and technology (TMT) sector.

This has covered a range of specialist areas including regulation, litigation, cost modelling, spectrum, restructuring, financial analysis and business strategy.

Most of Mr. Williams’ experience has been gained as a consultant working in the TMT practices of leading economic consulting firms. He also spent six years as a senior economist in the Global ICT team of the World Bank in Washington, DC. He joined BRG in 2016 to lead the TMT practice.

Mr. Williams has advised major European telecoms operators and regulators. Outside of Europe, his client work has included projects in the Middle East, South Africa, Indonesia and New Zealand.

In addition to advising telcos and media companies, he has advised governments, regulatory institutions and international organizations on regulatory and policy issues in the ICT sector. He has also supported clients during litigation and arbitration cases in the UK and overseas. This has been focused on the telecommunications sector, particularly in areas related to regulatory decisions.

Employment History

Deloitte LLP
2011 – 2016

World Bank ICT Group
Senior economist
2006 – 2011

Frontier Economics Ltd. London
Consultant and manager
2000 – 2006

National Economic Research Associates (NERA)
1998 – 2000

Areas of Expertise


University of Warwick
MSc, Quantitative Development Economics, 1996

University of Oxford, UK
MA, Politics and Economics, 1995