"We're concerned about dangerous and destabilising activities by China in this region," Lammy said in a video partly filmed alongside a vessel belonging to the Philippine Coast Guard, which has frequent tense confrontations with its Chinese counterpart.

"The Philippines is at the sharp end of this, facing frequent challenges to freedom of navigation and international law," Lammy added.

"Growth in the UK and around the world depends on these trade routes being safe and secure," Lammy said in the video shared on X.

China claims the strategically important South China Sea in nearly its entirety, despite an international ruling that its claims have no legal basis.

Beijing has deployed navy and coast guard vessels in a bid to bar Manila from crucial reefs and islands in the South China Sea, leading to a string of confrontations in recent months.

In a Saturday meeting with his Filipino counterpart Enrique Manalo, the UK and the Philippines signed a joint framework to boost defence and maritime cooperation.

"This joint framework will help us deliver more cooperation on defence, on regional security, on trade, on science, on tech, on climate and nature over this coming period," Lammy said at a Manila press conference.

It follows a deal between the Philippines and Canada last week to boost their security partnership, and is the latest such pact sought by Manila in the face of frequent clashes with the Chinese coast guard.

The Philippines has similar agreements with the United States, Australia and Japan.

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