Olwen Mair


I am an associate solicitor in Fox Williams’ dispute resolution team, acting for clients in general commercial litigation and international arbitration matters.

Olwen joined Fox Williams LLP in March 2019 as a trainee solicitor, qualifying into the firm’s dispute resolution team in March 2021.

Olwen acts on a range of contentious matters and has experience in litigation, arbitration, mediation and internal investigations. She has acted for both claimants and defendants in cases involving: transactional and corporate governance claims, civil fraud, breaches of contract and employment disputes. Olwen also works in the securities litigation team, advising institutional investors in third party funded group actions.

To contact Olwen or for more information…

Call: +44 (0)20 7614 2568
Email: omair@foxwilliams.com
Mobile: +44 (0)7751 400 735

My legal expertise

  • Arbitration
  • Civil fraud
  • Group actions
  • International disputes
  • Internal investigations
  • Securities litigation


  • Securities litigation group action against Tesco PLC on behalf of 234 institutional shareholders seeking +£1b in compensation.  Proceedings were commenced in September 2020 (just before limitation expired) and successfully settled (as announced by Tesco in its half year results in October 2021).

  • Collaborated with a US class action firm to build a claimant group for proceedings against Daimler AG, Mercedes-Benz Cars UK Limited, Mercedes-Benz Financial Services UK Limited and others. The claims related to the “Dieselgate” scandal in which Daimler and several other car manufacturers have been involved; and followed the US law firm’s settlement of its civil class action proceedings in 2020 for US$700m.

  • KMG International NV v Chen and Chipper Management Limited. Defending a £50 million claim in respect of allegations of fraudulent dissipation and ultimate sale of shares in a German entity and intentional wrongful conduct under Dutch law. The claimant obtained a £60 million freezing order at the start of the proceedings.

  • Advised and conducted an investigation for a luxury furnishings retailer in relation to potential criminal conduct and/or fraud by former employees.




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