SILK PROFILE
Sean O'Sullivan KC

Sean O'Sullivan KC

UK Bar 2026

Chambers ranking badge
Share profile
Chambers ranking badge
4 Pump Court
 4 Pump Court

Ranked in 3 practice areas

Shipping & Commodities

London (Bar)

20 years ranked

International Arbitration: Construction/Engineering

London (Bar)

6 years ranked

Energy & Natural Resources

London (Bar)

22 years ranked

About

Provided by 4 Pump Court

Practice Areas

Sean is a widely acclaimed commercial silk at 4 Pump Court, whose practice spans a wide range of shipping and energy disputes as well as related insurance and reinsurance claims. Sean is highly experienced in charterparty disputes, bills of lading contracts, sales of goods and shipbuilding disputes. He is regularly instructed by shipyards, buyers, owners and designers as well as oil companies, traders and contractors. As well as his counsel work Sean also accepts appointments as an arbitrator. He is recommended as a leading silk by mainstream legal directories for Shipping, Commodities, Energy, Insurance/Reinsurance and International Arbitration.

Chambers Review

Provided by Chambers

UK Bar

Shipping & Commodities - London (Bar)

Band 1
Individual Editorial

Sean O'Sullivan KC is a highly commended barrister with expertise in dry shipping matters including demurrage, charter party and sale of goods disputes. He stands out for his deft handling of shipbuilding disputes in litigation and arbitration.

Learn more about this teamView ranking table

International Arbitration: Construction/Engineering - London (Bar)

Band 1
Individual Editorial

Sean O'Sullivan KC is a technically and commercially sound advocate with excellent knowledge of the energy industry. He is particularly well known for his expertise in arbitrations arising in the marine engineering sphere and specialises in drilling and shipping issues.

Learn more about this teamView ranking table

Energy & Natural Resources - London (Bar)

Band 2
Individual Editorial

Sean O'Sullivan KC is a widely acclaimed, technically and commercially sound advocate with great knowledge of the energy industry. Particularly well known for his expertise in the marine engineering sphere, he specialises in drilling, shipping and offshore issues and has particular experience of representing contractors. He has a strong arbitration practice but is equally adept at handling straight commercial litigation.

Learn more about this teamView ranking table

Strengths

Provided by Chambers

  • He is fantastic, one of those people that makes everything seem reasonable.

    Shipping & CommoditiesUK Bar

  • Sean is an excellent KC and will give you clear and concise advice on difficult issues.

    Shipping & CommoditiesUK Bar

  • He is extremely smart and has a sharp awareness of business dynamics, quickly understanding the commercial positions of all parties involved.

    Shipping & CommoditiesUK Bar

  • Sean is the most user-friendly person at the Bar. He is absolutely down to earth.

    International Arbitration: Construction/EngineeringUK Bar

  • He's excellent - his written advocacy is very good and in cross-examination he's very surgical.

    International Arbitration: Construction/EngineeringUK Bar

  • Sean is an excellent advocate and very commercial in his approach.

    Energy & Natural ResourcesUK Bar

Ranked Barristers at 4 Pump Court (138)

All Circuits

What success is built on

Chambers is the leading data and intelligence partner for the legal sector.

Explore thought leadership