econ-da‘s expertise is based on strong foundations in economics and econometrics, many years of experience in applying this academic knowledge to competition matters and in working with large and diverse teams.


Matt Tavantzis has extensive experience working on the economic analysis of merger cases; both in his time at the UK competition authority and in a consulting capacity.

He has provided economic analysis and advice on a number of high-profile potential and completed mergers, cartel investigations, other antitrust cases (abuse of dominant position, State Aid), and litigation and settlement proceedings.

He has advised clients on matters before the European Commission; National Authorities in a number of European and non-European countries; and National Courts.  

The cases he has worked on span a wide array of industries including consumer products, food manufacturing, industrial products, retail, transport, telecommunications and broadcasting, postal services, mining, airlines, logistics and freight services, financial services, online services, waste management, music, and fashion.


Selected cases

Merger investigations: Essilor/Transitions (UK, Germany), Siemens/Invensys Rail (EC), AEG/Wembley Arena (UK), Universal/EMI (EC), Jewson/Build Center (UK), Texas Instruments/National Semiconductor (US), BHP Billiton/Rio Tinto (EC, Germany, Australia, Japan, Korea, China), Ineos/BASF JV (EC), Panasonic/Sanyo (EC), Posten/Post Danmark (EC), Arqiva/NGW (UK), Premier Foods/RHM (UK).

Cartel investigations and follow-on litigation: autmotive (EU), Freight Forwarding (EC, Switzerland, US, Singapore, Brazil), Air Cargo (US), Gas Insulated Switchgear (UK), Cathode Ray Tubes (EU, Brazil)

State Aid: Olympic Air (EC/Greece), Banking


Matt holds a postgraduate M.Res. Economics degree from the European University Institute (Italy); a postgraduate M.Sc. Economics degree from the University of Warwick (UK); and a graduate B.Sc. Economics degree from the Athens University of Economics and Business (Greece).  He has also attended courses at the University Pompeu Fabra (Spain) and the Catholic University Leuven (Belgium).  

He has previous experience with Charles River Associates and at the UK Office of Fair Trading (now part of the Competition and Markets Authority).