Quadrant Chambers

Energy & Natural Resources Department

London (Bar)
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A leading shipping set with a strong energy offering. Barristers at Quadrant are routinely engaged by upstream and downstream oil and gas clients in significant disputes. Unparalleled experience in marine, rig and transport engineering also informs the set's growing energy practice. Members recently represented Teesside Gas Transportation in a dispute with CATS North Sea concerning the running and operation of the North Sea gas pipeline. One interviewee describes the tenants at Quadrant as "personable and easy to work with."

Client service: "The clerks at Quadrant are particularly good." Gary Ventura and Simon Slattery are joint senior clerks.


Lionel Persey QC

A clear choice for mammoth oil disputes, Persey is highly regarded in the field for the depth of his technical expertise, especially in marine engineering. He specialises in midstream and upstream cases including those relating to pipeline, ship and rig construction, as well as oil production and exploration. He is well versed in cases involving oil majors and national oil companies, and has expertise in a number of Middle Eastern jurisdictions. He also has a significant amount of experience sitting as an arbitrator in shipbuilding disputes.
Strengths: "A big hitter of the energy world. He's a top cross-examiner." "Absolutely fabulous."


Luke Parsons QC

Highly respected for his commercial and admiralty practice. His noted shipping expertise strongly informs his adroit handling of a variety of marine engineering disputes in the E&P sector, and he is also adept at dealing with high-value corporate matters. His recent experience includes advising clients on disputes involving oil rigs, exploration platforms, floating storage platforms and pipelines.
Strengths: "A QC for the cases that are very hard to win." "Excellent on his feet."


Simon Rainey QC

A strong commercial silk with noted prowess in complex, high-profile oil and gas work. He is an expert in maritime and shipping issues, especially those concerning transportation and rig engineering. He frequently appears in the Commercial Court and Court of Appeal, as well as in arbitrations, and is highlighted by peers for his skilful advocacy.
Strengths: "He comes with a judicial-like approach and it's hard to resist his submissions." "Deservedly very popular for energy disputes. He has encyclopaedic knowledge of case law and is an effective, charming advocate."
Recent work: Represented Teesside in Teesside Gas Transportation Limited v CATS North Sea Limited & Others, a dispute concerning the running of a North Sea gas pipeline.