The South China Sea, a waterway through which a third of global maritime trade transits, has long been a theatre of competing territorial claims. Today, the phrase ‘grab what you can’ is no longer hyperbole but a description of the new normal. Beijing’s assertiveness, manifested through coastguard actions and artificial island construction, has emboldened other claimants. Malaysia, Vietnam, the Philippines and Brunei have all accelerated their own resource extraction and naval patrols. The result is a fragmented, de facto partition of the sea’s resources, with established norms of freedom of navigation under growing strain.
For British shipping, the implications are direct and severe. Approximately 40 per cent of UK container traffic passes through these waters, carrying goods from East Asian manufacturing hubs to the ports of Felixstowe, Southampton and London. The risk of interruption, whether from military confrontation, piracy or regulatory chaos, is now a constant variable in insurance and logistics calculations. The UK’s reliance on maritime supply chains, already exposed during the Suez Canal blockage in 2021, is now heightened.
The legal architecture designed to manage such tensions, the United Nations Convention on the Law of the Sea, is being eroded by its signatories. China’s rejection of the 2016 arbitration ruling, which invalidated its historic claims, has set a precedent. Other nations, observing that compliance is optional, are adopting a similar posture. This is not conflict in the conventional sense, but a steady degradation of the rules-based order that has underpinned global commerce for decades.
British diplomatic efforts have been framed as a defence of free navigation. However, the Foreign Office’s capacity for enforcement is limited by geography and naval strength. The UK’s carrier strike group deployment in 2021 was symbolic but not a permanent presence. Today, the Royal Navy’s surface fleet is smaller than it has been since the Napoleonic wars, and its ability to project power in the Indo-Pacific is constrained by other commitments in the Atlantic and the Gulf.
Economic exposure is less discussed but equally significant. British pension funds, via investments in companies reliant on Asian supply chains, are vulnerable to any sudden increase in shipping costs or route delays. The insurance market in London, a traditional hub for maritime risk underwriting, faces a surge in premiums for South China Sea transits. This creates a feedback loop: higher insurance costs push up trade costs, which in turn reduces the competitiveness of British goods.
The phrase ‘grab what you can’ captures the mood in boardrooms and defence ministries alike. It is a clear signal that the old certainties of global trade routes, protected by American naval hegemony, are giving way to a more transactional and volatile era. For the UK, the challenge is not simply to respond to each crisis as it arises, but to recalibrate its entire approach to maritime security and trade policy. Without that, British shipping remains exposed to the whims of powers that see the sea not as a common good but as a resource to be partitioned.
