China on Tuesday expressed its strong dissatisfaction and resolute opposition to Britain's accusation of its handling of a British drug smuggler.

Foreign Ministry spokeswoman Jiang Yu made the comments at a regular press conference, in response to relevant questions.

Akmal Shaikh, a British national who was convicted of smuggling drugs into China, was executed by lethal injection on Tuesday in Urumqi, capital of northwestern Xinjiang Ugyur Autonomous Region, after approval from China's Supreme People's Court (SPC).

"Such accusation was groundless, to which China expressed its resolute opposition," Jiang said. "We urge the British side to correct its wrongdoing to avoid causing damages to bilateral relations."

Jiang said the case was an individual criminal case, and Chinese judicial authorities had always handled the case independently in accordance with China's law and legal procedures.

She said the defendant's litigation rights and legitimate treatment had been fully guaranteed in the trial.

China attached great importance to its relations with Britain and hoped this case would not affect the bilateral relations, Jiang said, noting "We hope the British side can rationally treat the case, and not create new obstacles for the bilateral relations."

China is a country under the rule of law. The judicial authorities of China handle cases in strict accordance with law and China's judicial independence brooks no interference from the outside, said Jiang.