She added that the Foreign Office has raised the matter with the Chinese twice at ambassadorial level, once at deputy-head-of-mission level, and that the consular director has also raised it with senior Chinese consular officials visiting London.

WSJ: U.K. Raises Brit's Death in China Talks

Mr. Hague said that more than a week after he was informed of the case and instructed officials to seek a probe, on Feb. 15, the deputy head of mission of the British Embassy in Beijing met officials from the consular department of the Chinese Ministry of Foreign Affairs to convey the message.

WSJ: U.K. Details Response to Heywood's Death