Oluwaseun is Partner at SEDA Legal. She practices as an international arbitration counsel and sits as an arbitrator.
She has over 15 years’ experience as counsel in complex and high value arbitrations, and her sectoral experience include Maritime, Aviation, Oil and Gas, Mining, Construction, Hospitality, Healthcare and FMCG.
She has acted as an arbitrator and counsel in institutional and ad-hoc arbitrations in both international and domestic disputes under the LCIA, ICC, UNCITRAL, ACA, LCA, CRCICA and ADRA Arbitration Rules.
She is regarded as a leading arbitration expert and feedback about her says:
“Oluwaseun Philip-Idiok is a standout arbitration counsel, lauded by peers and clients alike for her "impressive cross-examination, coordination and questioning which was highly relevant, clear and elicited great responses" (Lexology Index Arbitration Report; 2025)
"Oluwaseun is very intelligent, hardworking and diligent. She is an emerging talent who is making meaningful contributions to the development of arbitration law and practice. Her commitment to excellence is highly commendable” (Lexology Index, Arbitration Future Leaders Report; 2026)
SELECT ARBITRATION EXPERIENCE
•Appointed arbitrator by the Dubai International Arbitration Court (DIAC) in an arbitration under DIAC rules, arising out of the alleged breach of a property development agreement.
•Party appointed arbitrator in an ad-hoc arbitration arising out of the breach of a Masters Services Agreement between a management company and the owner of a beverage plant in Nigeria.
•Appointed Tribunal Secretary by the London Court of International Arbitration (LCIA) in a US$41m arbitration under LCIA rules, arising out of the acquisition of a downstream oil company in East Africa
•Tribunal secretary in a US$17m arbitration between a sovereign state and an European firm, arising out of the alleged breach of a design and maintenance agreement.
•Successfully represented a global Big 4 and its Senior Country Partner in an arbitration instituted at the London Court of International Arbitration (LCIA), arising out of the breach of a contract on exit payments. An adverse award would have exposed senior management staff to personal liabilities
•Successfully represented a multinational oil and gas firm, in an arbitration under the ACA rules, arising out of the alleged breach of a gas supply agreement. An adverse award would have led to a floodgate of claims against the client.
•Successfully represented multiple purchasers in an arbitration under the ACA Rules, instituted against a real estate developer in claims arising out of several breaches of the sale and construction contracts.
•Successfully represented a multinational oil and gas company in a US$6m ad-hoc arbitration arising out of the alleged breach of a time charterparty agreement.
•Counsel to a FMCG company in concurrent proceedings valued at over US$560m in Ghana, Nigeria and Uganda, Tanzania and Kenya under the UNCITRAL and ACA rules, arising out of the breach of the terms of sale of the West and East African Businesses of a Global Retail Corporation.
•Counsel to a multinational in the enforcement of a treaty award against a sovereign state.
