He maintains a well-established domestic practice in industrial disease litigation, covering the coal mining, steel, rail, shipbuilding and construction sectors, as well as military claims involving members of the British Armed Forces.
In addition, Mussadak has a growing international arbitration and offshore practice in Gulf jurisdictions. He is increasingly involved in matters governed by English law with a cross-border element, and provides advice on merits, strategy, and dispute resolution. He also advises on sanctions risk assessments, cross-border matters where sanctions exposure is business-critical, and responses to regulatory enquiries, including RFIs.
As UK Lead of the Omani British Lawyers Association (OBLA), he promotes professional collaboration between the UK and Oman. He delivers webinars in partnership with the British Omani Society (BOS) and the cultural attaché of the Omani Embassy in London.
Mussadak also lectures state entities in the Gulf and multinational corporations on international best practice in governance, sanctions risk, and regulatory compliance.
He regularly authors articles on legal developments for publication by OBLA, BOS and BQ, and contributes to the organisation of international legal conferences in the region, including those hosted by LexisNexis Middle East.
Mussadak is developing a focused international arbitration and cross-border disputes practice, with particular emphasis on matters governed by English law and disputes with a Gulf nexus. He is involved as part of international dispute teams on commercial and fraud-related matters, with active involvement in arbitration clauses, procedural issues and substantive remedies in cross-border contexts.
Eagle Bunkering v Hormuz Marine (Oman): Cross-Border Marine Fuel Dispute (Ongoing)
Assisting on a cross-border commercial dispute arising out of two marine fuel cargo transactions (approximately 700 MT and 1,600 MT), governed by English law and subject to a DIAC arbitration clause.
Al Maashani v (1) One Trade Limited (2) Salem Ibrahim: Cross-Border Investment Fraud (Ongoing)
Assisting on a cross-border investment fraud dispute involving shares in a “clone firm”. The claim concerns allegations of fraudulent misrepresentation, deceit and breach of trust, with losses exceeding USD 1.5 million.
Mussadak’s international practice focuses on Gulf-facing advisory work. He advises on cross-border regulatory frameworks, governance and risk management, working closely with state entities, international organisations, and multinational corporations. He is familiar with a range of sanction regimes and enforcement activity by OFSI, OFAC and other regulators. He can advise Gulf companies on responding to regulatory enquiries (RFIs), on how best to navigate complex and often conflicting obligations, sanctions risk assessments, and disputes in an unpredictable regulatory environment.
Sohar Port & Freezone, Oman (2026)
Designed and delivered a bespoke two-day executive training programme for the CEO and senior management team of the GCC’s fastest-growing deep-sea port and freezone, on global economic sanctions (including UN Security Council, US OFAC, UK OFSI, EU), corporate governance, risk assessments and regulatory compliance.
US Embassy Muscat / US Department of State (2026)
Led a team, of two senior associates, in designing the RFP and RFQ process for legal services in relation to land acquisition of land for the new embassy compound.
Mussadak brings depth and authority to industrial disease litigation, particularly noise induced hearing loss (NIHL), across the steel, rail, coal mining and ship-building sectors. He is highly skilled in interpreting audiometry and applying the CLB diagnostic and the LCB quantification guidelines, including complex medical and technical issues such as asymmetry, lower-frequency loss, de minimis arguments, date of knowledge under the Limitation Act and the exercise of discretion under section 33. Trials regularly involve detailed cross-examination of medical experts and acoustic engineers, where mastery of the underlying science is essential.
A significant part of Mussadak’s practice is devoted to military claims, where he is nationally recognised. He has acted for hundreds of former and serving military personnel from the British Army, Royal Navy, and Royal Air Force against the Ministry of Defence (MOD). He has particular expertise in Military Noise Induced Hearing Loss (M-NIHL), the Overseas Operations (Service Personnel and Veterans) Act, combat immunity, and evolving causation issues in M-NIHL litigation.
Mussadak has authored a number of Practice Notes for LexisNexis, including:
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