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Practice Summary

Owain has substantial experience in commercial litigation and in competition law investigations and proceedings. His broad commercial law experience encompasses injunctive relief, civil fraud, company law, bias and confidentiality.

Recent cases have included Tatneft v Bogolyubov & Ors [2019] EWHC 1400 (security for costs in a Russian fraud claim); Bates v Post Office [2019] EWHC 3408 QB, [2019] EWHC 606 (QB) (various stages of high-profile group litigation); Halliburton Co v Chubb Bermuda Insurance [2018] 1 W.L.R. 3361 apparent bias in international commercial arbitration; Greene King v Gambling Commission [2017] 1 W.L.R. 3611 (licensing) and Re Beppler & Jacobson [2014] EWCA Civ 935 (unfair prejudice petition).

Owain has been recommended in Chambers UK and Legal 500 for competition, energy and sports law:


"He's great at presenting a succinct argument and doing it efficiently." Chambers UK 2021

Demonstrates an excellent capacity to get his head around complex scientific evidence.” “He's very measured and calm” and is “diligent and hard-working.” Chambers UK 2020

A real fighter in courtLegal 500 2019

Has a nice manner with clients and a good commercial feel.Chambers UK 2019

Cool, conscientious and clever. He is capable of charming clients and courts alike.Legal 500 2018

A gifted draftsman.” Chambers UK 2018

He is an expert in competition law. A very good and able junior, he is calm, collected and easy to work with.” “Frequently acts and advises on competition issues that form part of larger commercial disputes. He has recent experience of handling damages litigation and offering merger control advice.Chambers UK 2017

Responsive, bright and commercial Legal 500 2017


"He has confidence in court and he calmly and systematically makes his points.’ Legal 500 2021

"He has a straight alpha legal brain and is first rate senior junior for any financially or legally technical case." Legal 500 2020

A solid mid-level junior – proactive, hardworking and a real fighter in court." Legal 500 2019

A very bright lawyerLegal 500 2018

A clever, commercial and combative advocate, who is ready to fight the client’s corner.Legal 500 2017


A thorough, comprehensive, commercial and practical barrister.Chambers UK 2019

He is very confident and clients like him.Chambers UK 2018

A very bright young lawyer.Legal 500 2018

Technically very sound and offers practical advice.Chambers UK 2017