Chief Secretary Donald Tsang Yam-kuen will hold discussions with a key research body on Hong Kong's economic future during a stopover in London at the end of a visit to the United States next week. The Economist Intelligence Unit has drastically lowered Hong Kong's rankings in global economic competitiveness, citing weaknesses including mismatch of manpower. It is understood the London meeting was included at the final stage of planning for Mr Tsang's first official overseas trip since taking over from Anson Chan Fang On-sang in May. He will fly to Los Angeles tomorrow before going on to visit Washington and also New York. During the seven-day US visit he will meet senior officials and politicians, think-tanks, policy groups and business leaders. They include Secretary of State Colin Powell and National Security Adviser Condoleezza Rice, as well as a wide range of congressional leaders from both parties. Mr Tsang will hold discussions with think-tanks including the Center for Strategic and International Studies and groups such as the National Committee on US-China Relations and the Council on Foreign Relations in New York. He will officiate at two high-profile Brand Hong Kong promotions in New York and Los Angeles. Mr Tsang said the purpose of his visit was to provide key contacts, supporters and critics in the US with a better understanding of Hong Kong's high degree of autonomy under the 'one country two systems' formula.