Portrait of Maurice de Valois Turk

Maurice de Valois Turk : Partner

Maurice is head of Oxera’s Amsterdam office and jointly heads the firm’s Mergers practice. He is a highly experienced competition economist and financial analyst, advising companies on how to deal with merger investigations and regulatory matters. He has advised notifying firms as well as third-party interveners in the context of mergers (unilateral, coordinated, vertical or conglomerate effects). In addition, he has extensive experience with remedies, having acted as monitoring trustee on multiple mandates as well as being project manager for the creation and implementation of various merger remedies.

Maurice is a non-governmental adviser to the International Competition Network on behalf of the European Commission, and is active in the Mergers workgroup. As well as the European Commission, he has worked with competition authorities across Europe (in Belgium, the Czech Republic, Germany, Hungary, the Netherlands, Poland and Switzerland). He has also assisted telecoms and media firms with a range of matters covering regulation and market power.

Before joining Oxera, Maurice worked for seven years as an in-house economist with Liberty Global and KPN, and for 14 years with various consultancy firms.

Maurice speaks Dutch, English, German, and French.

Tel: +31 (0) 20 888 8382

Maurice's specialisms include:

professional experience

  • Economic expert report for international firm under investigation for conduct infringement with the Netherlands competition authority (ACM) (2020–)

  • Advice to Telenet and DPG Media in obtaining phase 1 clearance with the European Commission for the formation of a joint venture (2020)

  • Advice to a chemicals firm on potential merger filing with the European Commission (2020)

  • Advice to Liberty Global in obtaining clearances from the Swiss competition authority (WEKO) for the combination of its Swiss activities and Sunrise (2018–20); this project was shortlisted for the 2020 GC Awards in the category ‘European Merger Control Matter of the Year’

  • Support for VodafoneZiggo in its appeal against the Netherlands competition authority’s market review decision for Wholesale Fixed Access (2018–20)

  • Advice to a third party in the Netherlands competition authority’s (ACM) investigation of the Sanoma–Iddink merger (2019)


  • Dechamps, P. and de Valois Turk, M. (2020), ‘Mixed signals? Where Does the Hutchison Judgment Leave Economic Analysis of Non-Coordinated Effects?’, Journal of European Competition Law and Practice, 11:9, pp. 531–36.

  • Rosenboom, N., den Boer, A., Damstra, L. and de Valois Turk, M. (2020), ‘Kroniek economie in het mededingingsrecht 2019’, Markt&Mededinging 2020, 2, pp. 53–65.

  • Rosenboom, N., den Boer, A. and de Valois Turk, M. (2019), ‘Kroniek economie in het mededingingsrecht 2018’, Markt&Mededinging 2019, 2, pp. 58–69.

  • De Valois Turk, M. (2012), ‘Merger Remedies beyond the Competition Concern: When Could You End up Giving More?’, Journal of European Competition Law & Practice, 3:5, 1 October, pp. 495–499.

  • De Valois Turk, M. (2009), ‘The EC’s revised remedies notice: the trustee’s perspective’, European Competition Law Review, 30, July, pp. 332–339.

  • De Valois Turk, M. (2006), ‘Wat levert kabelregulering per saldo op?’, Economische Statistische Berichten, January.


  • Diploma Strategy & Innovation, Saïd Business School, University of Oxford, UK

  • MA Regulation & Competition Policy, University of East Anglia, UK

  • MA Corporate Finance, University of Maastricht, the Netherlands

Latest Insights:  Maurice Valois Turk

9 minute read
On 21 December 2023, the European Court of Justice (ECJ) pulled the red card for sports associations arbitrarily excluding competing sports organisers in their prior approval rules, acknowledging the potential…
7 minute read
Consumer goods have seen significant price rises lately, driving up general inflation levels. Some retailers point to territorial supply restrictions limiting their ability to secure lower wholesale prices—they consider these…
10 minute read
The European Parliament and the Council are currently debating the European Commission’s proposed regulation on foreign subsidies, which covers subsidies granted by third countries that have the potential to distort…
11 minute read
On 17 March 2020, the Dutch Trade and Industry Appeals Tribunal (CBb) published its long-awaited verdict on the appeal against the Netherlands Authority for Consumers and Markets (ACM) 2018 finding…

Navigating Merger Control

Together with Skadden and ThoughtLeaders4, Oxera is delighted to invite you to join us on Tuesday 4 June, along with senior members of the EU and UK judiciary and competition authorities, to discuss the current complexities in navigating merger control. Click here to register for the… Read More

Image depicting Navigating Merger Control

Back to top