Home / People / Siobhan Kahmann

Siobhan Kahmann

Of Counsel

CMS EU Law Office
Avenue des Nerviens 85
1040 Brussels
Languages English, French

Siobhan has practised EU and UK competition law for over ten years in Brussels and the UK, in addition to counselling clients on regulatory, policy and trade matters. She is an Advocaat with the Brussels Bar, and a Solicitor in Scotland, England and Wales. Her competition experience has included: complex cartel infringement assessments, defence, and leniency applications; detailed vertical, horizontal, tech transfer and motor vehicle agreement analysis and support; substantial advice on different market inquiries; strategic and in-depth counsel for clients in abuse of dominance claims; and significant experience in matters on UK, European and international merger control. 

She has extensive experience advising on competition law in the tech industry, including IoT, big data and artificial intelligence, in addition to automotive and other transport, and on FMCG issues. Siobhan has also recently spent over a year working as an in-house competition counsel at a global oil and gas company, where her focus included advising on new energies initiatives and electric car charging infrastructure. She also specialises in different aspects of tech regulation, including net neutrality, and autotech with broad experience in electric and autonomous vehicles.

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Relevant experience

  • Cartel defence: advising clients across different industries on cartel defence strategies and procedures in the EU and at national level including leniency applications, and all stages of investigations. 
  • E-commerce: engaging in comprehensive e-commerce review, training and strategy for clients in a number of different sectors and jurisdictions.
  • Agreements: providing detailed and practical legal advice and training to a diverse range of MNCs on vertical, horizontal and other complex arrangements.
  • Abuse of dominance: counselling clients on formulating abuse of dominance complaints including strategy and policy towards regulators and responses to investigations, in addition to defence approaches and official responses.
  • Compliance programmes: compiling extensive and tailored compliance programmes and training for various clients across numerous sectors and jurisdictions, including designing e-learning modules.
  • Merger control: strategically advising on and securing the clearance of a number of mergers, including but not limited to the automotive industry, at both national and European level.

Other Regulatory

  • Net Neutrality: advising on pan-European net-neutrality issues, with a focus on zero-rating.
  • EV: counselling clients in the evolving electric/autonomous vehicle and energy industry on a range of competition and regulatory issues and policy support.
  • Regulatory: providing legal support and analysis across a wide-range of EU regulatory and competition issues including sustainability, energy, emissions, CRS, free movement and environmental frameworks.
  • Trade: preparing trade submissions for a variety of different EU and WTO procedures.
  • Policy: supporting and enabling clients’ successful engagement on policy issues with the EU institutions.
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  • LL.B Honours, University of Aberdeen
  • LL.M, EU Competition and Business Law, Universiteit van Amsterdam
  • DLP, University of Edinburgh 
  • QLTT English Law, College of Law
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  • Advocaat, Brussels Bar (Dutch)
  • Solicitor and Notary Public, Law Society of Scotland
  • Solicitor, Law Society of England and Wales
  • Writer of the Signet to her Majesty the Queen (WS)
  • Elected Council Member (International), Law Society of Scotland
  • Committee Member, Competition, Tech Law, and International Trade Committees, with the Law Society of Scotland
  • Observer Member in the EU Law Committee, Member of the Competition Section, Law Society of England and Wales
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Siobhan is a regular contributor and presenter on a range of legal developments including competition law, e-commerce, big data, net neutrality, technology law, and electric and autonomous vehicles. She has also written and presented extensively on Brexit, including on competition law, and lawyers’ practising rights.

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Show only
02 December 2020
CMA an­nounces mar­ket study in­to UK elec­tric vehicle char­ging
Earli­er today, the 2nd Decem­ber 2020, the CMA launched a mar­ket study in­to the UK elec­tric vehicle (EV) char­ging mar­ket. This fol­lows in­creased in­terest and sup­port in the UK for the sec­tor, in­clud­ing...
05 February 2021
EU Com­pet­i­tion Law Brief­ings
The EU Com­pet­i­tion Law Brief­ings have been cre­ated to provide a plat­form for our cli­ents and oth­er com­pet­i­tion law ex­perts to stay up to date on the de­vel­op­ments of EU Com­pet­i­tion Law.  Every month...