Speaking in Beijing on Friday, Chinese Foreign Ministry spokesman Lu Kang said none of the recent comments "playing up" tension in the South China Sea were made by regional countries.
"Countries in the region are working together to safeguard and promote regional peace and prosperity, yet we see other countries who insist on stirring up trouble while the situation is trending towards calm in the South China Sea," he told a daily news briefing.
Britain's move could also upset ties between London and Beijing, undermining efforts to shore up what the two governments have called a "golden era" in their relationship as Britain heads towards a divorce with the European Union.
China has repeatedly denounced efforts by countries from outside the region to get involved in the South China Sea dispute.
The South China Sea is expected to dominate a regional security meeting in Manila next week, where Chinese Foreign Minister Wang Yi will meet counterparts from the Association of Southeast Asian Nations (ASEAN) countries.
Meeting ASEAN diplomats in Beijing on Wednesday, Wang told them both sides must "exclude disturbances on the South China Sea issue, and maintain positive momentum", China's Foreign Ministry said.
In the meantime, China has conducted a two-pronged campaign to buttress its influence in the waters — encouraging its citizens to travel to the disputed islands with attractions, such as a brand-new cinema, and building up its own military presence there.