Bas Dessens
Director
Bas Dessens is a Director at E.CA Economics’ London office, which he leads together with Alena Kozakova. He joined E.CA in 2006 and has extensive experience in the field of competition economics. His work has focused on damage assessments related to cartel/information exchange cases (e.g. trucks, smart-card chips, air cargo), including for collective actions, and economic analysis in the context of merger proceedings (e.g. EssilorLuxottica/GrandVision, Holcim/Lafarge, Knauf/Armstrong). In addition, he has been engaged in cases related to state aid, abuse of dominance, and regulatory matters.
Bas has experience in a broad range of sectors, including transportation, lifts, advertising, online platforms, microelectronics, pharmaceuticals, beverage distribution, beer, optical retail, hearing aids, petrol stations, groceries, telecommunications, auditing services, interchange fees, cinemas, car parts, forklift trucks, gas-insulated switchgear and various commodity industries.
Bas has supported clients on cases brought before the European Commission, the German Bundeskartellamt, the UK Competition and Markets Authority (CMA), the Netherlands Authority for Consumers and Markets, and the Belgian Competition Authority. For more than a year, Bas was seconded to the UK Competition Commission (the CMA’s predecessor), where he worked on several merger proceedings and a market investigation.
Prior to joining E.CA, Bas served as a consultant for a business consultancy in the Netherlands. While there, he worked on several projects that focused on the consumer electronics, chemicals, and oil and gas industries. Bas holds master’s degrees from Tilburg University in the Netherlands and the Humboldt University of Berlin in the areas of business and economics.
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- MSc International Business, Tilburg University
- MSc Economics and Management Science, Humboldt University of Berlin
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- Mergers
- Papers & reports
Review of the CMA’s Approach to Vertical Mergers
- Mergers
- Papers & reports
Ex-post Evaluation of Vertical Mergers
, Bas Dessens, Alena Kozakova, Raphaël Poncet, Michael Rauber, Giulia Santosuosso, Ignacio Balaguer Lopez, Competition and Market Authority, March 2022A review by E.CA Economics of the CMA’s assessment of vertical theories of harm in four merger clearance decisions.
- Mergers
- Papers & reports
Nieuwe economische standaarden in fusiecontrole: Wat komt er na HHI en SSNIP (New economic standards in merger control; in Dutch)
- Papers & reports
- Regulated industries and market design
Zugangsregulierung – Auswirkung auf Investitionen in das Festnetz in der Schweiz
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- Litigation, damages and arbitration
- Presentations
Competitive assessment of price cycles in German retail gasoline markets
Bas Dessens, Hans W. Friederiszick, Dennis Beling, Presentation at the ACE Annual Conference, Bergen, Norway, November 2011

