LONDON, July 3  -- China and Britain should join hands to boost their law enforcement and security cooperation in the face of a complex and grim international security situation and common threats, a visiting special envoy of Chinese President Xi Jinping has said.

Meng Jianzhu, a member of the Political Bureau of the Central Committee of the Communist Party of China (CPC), and also head of the Commission for Political and Legal Affairs of the CPC Central Committee, made the remarks Thursday during a meeting with British Prime Minister David Cameron.

During the meeting, Meng conveyed regards of President Xi and Premier Li Keqiang to Cameron, and expressed his condolences over the deaths of British nationals in the recent Tunisian terrorist attack.

The China-UK relations have entered the fast track for development, and the two countries' pragmatic cooperation in various fields has garnered fruitful results, Meng said.

He added that President Xi's state visit to Britain in October will usher in a "golden age" in bilateral ties.

China is willing to work with the British side to take the opportunity to map out a comprehensive plan for the medium- and long-term development of bilateral relations in the new era and jointly make new contributions to world peace and stability, he said.

Meng said cooperation in the law-enforcement and security areas is an important component of the China-UK comprehensive strategic partnership, the embodiment of the two nations' high degree of political trust, and a new highlight of their all-around cooperation in the new era.

In the face of complex and grim international security situation and common threats, Meng said, China and Britain need to enhance their communication and join hands in setting a good example for law-enforcement and security cooperation between major countries.

Cameron, on his part, said the UK-China relations have become increasingly closer in recent years, and the two countries have made progress in their cooperation in areas of economy, trade, investment and finance.

Noting that this year is a "golden year" in UK-China ties, Cameron said the British side is looking forward to President Xi's state visit in autumn, and expressed the hope that the visit will be a complete success.

Britain is also willing to work with China to step up law enforcement, security and anti-terror cooperation through bilateral means and the United Nations, Cameron said.

The meeting was also attended by Britain's First Secretary of State and the Chancellor of the Exchequer George Osborne.

During his visit in Britain, Meng also met with British Foreign Secretary Philip Hammond and officials from British law enforcement and security departments.